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Contact interactions, self-adjoint extensions, and low-energy scattering Ann. Phys. (IF 3.0) Pub Date : 2024-03-19 Daniel R. DeSena, Brian C. Tiburzi
Low-energy scattering is well described by the effective-range expansion. In quantum mechanics, a tower of contact interactions can generate terms in this expansion after renormalization. Scattering parameters are also encoded in the self-adjoint extension of the Hamiltonian. We briefly review this well-known result for two particles with -wave interactions using impenetrable self-adjoint extensions
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The hidden Lorentz covariance of quantum mechanics Ann. Phys. (IF 3.0) Pub Date : 2024-03-16 Partha Nandi, Frederik G. Scholtz
This paper introduces a systematic algorithm for deriving a new unitary representation of the Lorentz algebra () and an irreducible unitary representation of the extended (anti) de-Sitter algebra () on . This representation is equivalent to a representation on , and the corresponding similarity transformation is identified. An explicit representation in terms of differential operators is given, and
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Images of nonsingular nonrotating black holes in conformal gravity Ann. Phys. (IF 3.0) Pub Date : 2024-03-15 Zhi-Shuo Qu, Towe Wang, Chao-Jun Feng
The accretion disk around a black hole and its emissions play an essential role in theoretical analysis of the black hole image. In the literature, two analytical toy models of accretions are widely adopted: the spherical model and the thin disk model. They are different geometrically but both thin optically. We polish them for free-falling accretions around static spherical black holes. As an application
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On the emergent “Quantum” theory in complex adaptive systems Ann. Phys. (IF 3.0) Pub Date : 2024-03-13 Tristan Hübsch, Djordje Minic, Konstantin Nikolic, Sinisa Pajevic
We explore the concept of emergent quantum-like theory in complex adaptive systems, and examine in particular the concrete example of such an emergent (or “mock”) quantum theory in the Lotka–Volterra system. In general, we investigate the possibility of implementing the mathematical formalism of quantum mechanics on classical systems, and what would be the conditions for using such an approach. We
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A new braneworld with conformal symmetry breaking Ann. Phys. (IF 3.0) Pub Date : 2024-03-07 G. Alencar, I.C. Jardim, R.I. de Oliveira Junior, M. Gogberashvili, R.N. Costa Filho
We explore the conformal 5D braneworld, where warping emerges through conformal symmetry breaking. Our scenario seamlessly aligns with conventional brane approaches if conformal symmetry remains unbroken. It is shown that a model with a single conformal breaking parameter effectively localizes gravity on the brane, but it falls short in trapping gauge bosons. However, in scenarios with two parameters
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Flat band effects on the ground-state BCS-BEC crossover in atomic Fermi gases in a quasi-two-dimensional Lieb lattice Ann. Phys. (IF 3.0) Pub Date : 2024-03-05 Hao Deng, Chuping Li, Yuxuan Wu, Lin Sun, Qijin Chen
The ground-state superfluid behavior of ultracold atomic Fermi gases with a short-range attractive interaction in a quasi-two-dimensional Lieb lattice is studied using BCS mean-field theory, within the context of BCS-BEC crossover. We find that the flat band leads to nontrivial exotic effects. As the Fermi level enters the flat band, both the pairing gap and the in-plane superfluid density exhibit
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Exploring the nonclassical dynamics of the “classical” Schrödinger equation Ann. Phys. (IF 3.0) Pub Date : 2024-03-04 David Navia, Ángel S. Sanz
The introduction of nonlinearities into the Schrödinger equation has been considered in the literature as an effective manner to describe the action of external environments or mean fields. Here, we explore the nonlinear effects induced by subtracting a term proportional to Bohm’s quantum potential to the usual (linear) Schrödinger equation, which generates the so-called “classical” Schrödinger equation
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Geometrically constrained localized configurations: First-order framework and analytical solutions Ann. Phys. (IF 3.0) Pub Date : 2024-03-04 D. Bazeia, M.A. Feitosa, R. Menezes, G.S. Santiago
This work deals with the presence of topological structures in models of two real scalar fields in the two-dimensional spacetime. The subject concerns the presence of a geometric constriction, which appears with a modification of the kinetic term of one of the two fields. We elaborate on the construction of a first-order framework, which directly contributes to find analytical solutions. We describe
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Study of charged gravastar model in f(Q) gravity Ann. Phys. (IF 3.0) Pub Date : 2024-03-01 Debasmita Mohanty, Sayantan Ghosh, P.K. Sahoo
In recent days gravastar has been a very lucrative alternative to black holes, as it does not suffer from the singularity problem as well and it is based on sound physical grounds. Modified Symmetric teleparallel equivalent of gravity also has seen quite a few successes in recent years both in cosmology as well as in astrophysical objects like black holes and wormholes. In this paper, we have considered
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Quantum friction for a scalar model: Spatial dependence and higher orders Ann. Phys. (IF 3.0) Pub Date : 2024-02-28 Aitor Fernández, César D. Fosco
We use a perturbative approach to evaluate transition amplitudes corresponding to quantum friction, for a scalar model describing an atom which moves at a constant velocity, close to a material plane. In particular, we present results on the probability density per unit time of exciting degrees of freedom on specific regions of the plane. This allows one to know spatial features of the effect which
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Reduced probability densities of long-lived metastable states as those of distributed thermal systems: Possible experimental implications for supercooled fluids Ann. Phys. (IF 3.0) Pub Date : 2024-02-20 Zohar Nussinov
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New solutions of coupled nonlocal NLS and coupled nonlocal mKdV equations Ann. Phys. (IF 3.0) Pub Date : 2024-02-20 Avinash Khare, Avadh Saxena
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Shadow and greybody bounding of a regular scale-dependent black hole solution Ann. Phys. (IF 3.0) Pub Date : 2024-02-20 Ali Övgün, Reggie C. Pantig, Ángel Rincón
In this manuscript, we explore the shadow and the greybody bounding characteristics of a regular black hole within 4-dimensional space–time, employing the context of gravity that is scale-dependent. Our focus lies in determining limitations on the parameter denoted as , which serves as a descriptor for the scale-dependent solution with respect to the classically observed shadow radius as indicated
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Caustics in self-gravitating N-body systems and large scale structure of universe Ann. Phys. (IF 3.0) Pub Date : 2024-02-18 George Savvidy
In this paper we demonstrate the generation of gravitational caustics that appear due to the geodesic focusing in a self-gravitating N-body system. The gravitational caustics are space regions where the density of particles is higher than the average density in the surrounding space. It is suggested that the intrinsic mechanism of caustics generation is responsible for the formation of the cosmological
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Inverse Sauter effect through a smooth potential step in binary waveguide arrays Ann. Phys. (IF 3.0) Pub Date : 2024-02-17 Minh C. Tran, Truong X. Tran
We have systematically investigated the quantum relativistic inverse Sauter effect which is the prohibition of the inverse Klein tunneling effect of electrons through a smooth inverse potential step if its declining transition width is large enough. We can simulate this inverse Sauter effect by launching a Dirac soliton in binary waveguide arrays where the smooth transition region of the inverse potential
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Rationally extended harmonic oscillator potential, isospectral family and the uncertainty relations Ann. Phys. (IF 3.0) Pub Date : 2024-02-15 Rajesh Kumar, Rajesh Kumar Yadav, Avinash Khare
We consider the rationally extended harmonic oscillator potential which is isospectral to the conventional one and whose solutions are associated with the exceptional, - Hermite polynomials and discuss its various important properties for different even codimension of . The uncertainty relations are obtained for different and it is shown that for the ground state, the uncertainty increases as increases
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A unified quasiparticle approach to the theory of strongly correlated electron liquids Ann. Phys. (IF 3.0) Pub Date : 2024-02-13 V.A. Khodel, J.W. Clark, M.V. Zverev
Landau’s quasiparticle formalism is generalized to describe a wide class of strongly correlated Fermi systems, in addition to conventional Fermi liquids. This class includes (i) so-called marginal exemplars and (ii) systems that harbor interaction-driven flat bands, in both of which manifestations of non-Fermi-liquid behavior are well documented. Specifically, the advent of such flat bands is attributed
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Does a second-class primary constraint generate a gauge transformation? Electromagnetisms and gravities, massless and massive Ann. Phys. (IF 3.0) Pub Date : 2024-02-12 J. Brian Pitts
In constrained Hamiltonian dynamics there are two views regarding how first-class constraints generate gauge transformations: individually or only in a certain combination, the Rosenfeld–Anderson–Bergmann–Castellani gauge generator. This gauge generator preserves Hamilton’s equations and changes the canonical action at most by a boundary term; Hamiltonian’s equations are the Euler–Lagrange equations
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Coexistence of localized and extended states in the Anderson model with long-range hopping Ann. Phys. (IF 3.0) Pub Date : 2024-02-09 V. Temkin, A.S. Ioselevich
We study states arising from fluctuations in the disorder potential in systems with long-range hopping. Here, contrary to systems with short-range hopping, the optimal fluctuations of disorder responsible for the formation of the states in the gap, are not rendered shallow and long-range when approaches the band edge (). Instead, they remain deep and short-range. The corresponding electronic wave functions
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Propagation of light and retarded time of radiation in a strong gravitational wave Ann. Phys. (IF 3.0) Pub Date : 2024-02-08 Konstantin E. Osetrin, Vladimir Y. Epp, Sergey V. Chervon
For the strong gravitational wave model, an explicit transformation is obtained from a privileged coordinate system with a wave variable to a synchronous reference frame with separation of time and space variables. In a synchronous reference frame, a general form of the gravitational wave metric, solutions to the equations of trajectories for test particles in the Hamilton–Jacobi formalism, a solution
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Thermodynamic topological classification of higher dimensional and massive gravity black holes Ann. Phys. (IF 3.0) Pub Date : 2024-02-07 Adnan Malik, Aqsa Mehmood, M. Umair Shahzad
In this work, we investigate the thermodynamic properties of black holes (BHs) that have non-trivial topological features in their phase diagrams. We consider three different models of BHs: (1) a class of BHs in dRGT massive gravity, which adds a mass term to general relativity; (2) a class of BHs in 5D Yang–Mills massive gravity, which combines dRGT massive gravity with a non-Abelian gauge field;
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Cosmology of Tsallis and Kaniadakis holographic dark energy in Saez–Ballester theory and consideration of viscous van der Waals fluid Ann. Phys. (IF 3.0) Pub Date : 2024-02-07 Khandro K. Chokyi, Surajit Chattopadhyay
In the framework of Saez-Ballester (SB) theory, the current study proposes a reconstruction scheme for Tsallis and Kaniadakis holographic dark energy, particular cases of a more generalized Nojiri-Odintsov holographic dark energy (Nojiri and Odintsov, 2006; , 2017, , pp.1-8.), with Hubble horizon and future event horizons serving as the universe’s respective trapping horizons. The Hubble parameter
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Correction to the Friedmann equation with Sharma–Mittal entropy: A new perspective on cosmology Ann. Phys. (IF 3.0) Pub Date : 2024-02-06 Muhammad Naeem, Aysha Bibi
Black hole entropy does not obey the area law. The area law, given by or , where and , for , , indicates the amount of quantum gravitational deformation effects. This shows that gravity and thermodynamics are closely related. The modification to the entropy expression, not only change the energy density of ADE, but also modifies the Friedmann equations due to the thermodynamics-gravity conjecture.
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Some exact solutions of Friedmann cosmological equation Ann. Phys. (IF 3.0) Pub Date : 2024-02-04 Maria Shubina
In this paper we present a number of examples of exact solutions for the Friedmann cosmological equation for metric gravity model. Emphasis was placed on the possibility of obtaining exact time dependences of the main cosmological physical quantities: scale factor, scalar curvature, Hubble rate and function . For this purpose an ansatz was used to reduce the Friedmann equation to an ordinary differential
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Effect of the three-body interactions on the reduction of the exchange dipolar term Ann. Phys. (IF 3.0) Pub Date : 2024-02-03 Smain Kouidri
We focus our study on the effect of the exchange dipolar term in the absence/presence of three-body interactions for the Bose dipolar gas using two approximations firstly that of Hartree–Fock-Bogoliubov Popov (HFB-P) where the anomalous density is totally neglected and secondly the generalized Hartree–Fock Bogoliubov (GHFB) approximation which takes it into account. The aim is to determine the three
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Observational signatures: Shadow cast by the effective metric of photons for black holes with rational non-linear electrodynamics Ann. Phys. (IF 3.0) Pub Date : 2024-02-02 Akhil Uniyal, Sayan Chakrabarti, Mohsen Fathi, Ali Övgün
This study explores spherically symmetric non-linear electrodynamics black holes and their effects on light propagation. We derive the governing metric, revealing radial coordinate dynamics within the event horizon. We analyze photon trajectories, finding that increasing magnetic charge expands the horizon and emission range. Furthermore with the help of the Event Horizon Telescope results, we constrain
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Multiplexing signals with twisted photons by a circular arc phased array Ann. Phys. (IF 3.0) Pub Date : 2024-02-02 P.O. Kazinski, P.S. Korolev, G.Yu. Lazarenko, V.A. Ryakin
The theory of multiplexing electromagnetic signals by means of twisted photons generated by a uniform circular array (UCA) is developed in the case when the receiving antenna represents an array of elements located on a circular arc. The radiating elements are characterized by certain current distributions and are not points, in general. The polarization of created electromagnetic waves is fully taken
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Interior analysis, stretched technique and bubbling geometries Ann. Phys. (IF 3.0) Pub Date : 2024-02-02 Qiuye Jia, Hai Lin
We perform a detailed analysis of quarter BPS bubbling geometries with AdS asymptotics and their corresponding duality relations with their dual states in the quantum field theory side, among other aspects. We derive generalized Laplace-type equations with sources, obtained from linearized Monge–Ampere equations, and used for asymptotically AdS geometry. This enables us to obtain solutions specific
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Configurational entropy and the N∗(1440) Roper resonance in QCD Ann. Phys. (IF 3.0) Pub Date : 2024-02-02 G. Karapetyan
The electroexcitation of the Roper resonance, which defines the first radially excited state of the nucleon, is examined within the soft-wall AdS/QCD model. Such excited Fock states are characterized by the leading three-quark component, which determines the main properties of Roper resonance. The differential configurational entropy (DCE) was used in the nuclear interaction with a gauge vector field
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Quantization of Einstein–Cartan theory in the first order form Ann. Phys. (IF 3.0) Pub Date : 2024-01-26 F.T. Brandt, J. Frenkel, S. Martins-Filho, D.G.C. McKeon
We consider the Einstein–Cartan theory with the tetrad eμa and spin connection ωμab taken as being independent fields. Diffeomorphism invariance and local Lorentz invariance result in there being two distinct gauge transformations in this approach, and consequently two ghost fields arise when employing the usual Faddeev–Popov quantization procedure. Our choice of gauge fixing retains the gauge invariances
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Dissipative preparation of many-body spin steady states using trapped ultracold atoms Ann. Phys. (IF 3.0) Pub Date : 2024-01-28 Roland Cristopher F. Caballar
This article presents a dissipative method of creating a spin steady state, or a state whose spin expectation values approaches a fixed value over time, using a trapped gas of ultracold atoms coupled to a background BEC. The ultracold atoms are trapped in a double potential well embedded in a wide harmonic trap, which has a higher energy level than the double wells. The trapped atoms are then excited
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Spatial solitons in double-well potentials Ann. Phys. (IF 3.0) Pub Date : 2024-01-26 Chunfu Huang
The existence, stability and propagation of spatial solitons in double-well potentials with cubic nonlinearity are investigated. The symmetric, tripole and quadrupole solitons show stability at lower power, while the symmetry-broken and antisymmetric solitons can remain stable throughout their existence curves. In comparison, the centered fundamental solitons are less stable than their symmetry-broken
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Quantum-classical conjecture on Einstein's diffusion-mobility relation for two-dimensional Schrödinger-type degenerate systems: An entropy-ruled transport analysis Ann. Phys. (IF 3.0) Pub Date : 2024-01-25 K. Navamani
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Ladder operators with no vacuum, their coherent states, and an application to graphene Ann. Phys. (IF 3.0) Pub Date : 2024-01-20 F. Bagarello
In literature ladder operators of different nature exist. The most famous are those obeying canonical (anti-) commutation relations, but they are not the only ones. In our knowledge, all ladder operators have a common feature: the lowering operators annihilate a non zero vector, the vacuum. This is connected to the fact that operators of these kind are often used in factorizing some positive operators
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Majorana fermions in a two-band two-dimensional Fermi system Ann. Phys. (IF 3.0) Pub Date : 2024-01-23 Heron Caldas
Majorana fermions represent potential candidates for realizing fault-tolerant topological quantum computation. We obtain the exact mapping between a two-band hybridized model and a model with a topological superconducting state supporting Majorana fermions. The antisymmetric hybridization employed resembles that of spin–orbit coupling. We consider the situation where the model Hamiltonian comprises
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Bethe ansatz solutions and hidden sl(2) algebraic structure for a class of quasi-exactly solvable systems Ann. Phys. (IF 3.0) Pub Date : 2024-01-20 Siyu Li, Ian Marquette, Yao-Zhong Zhang
The construction of analytic solutions for quasi-exactly solvable systems is an interesting problem. We revisit a class of models for which the odd solutions were largely missed previously in the literature: the anharmonic oscillator, the singular anharmonic oscillator, the generalized quantum isotonic oscillator, non-polynomially deformed oscillator, and the Schrödinger system from the kink stability
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Einstein–Gauss–Bonnet cosmological theories at reheating and at the end of the inflationary era Ann. Phys. (IF 3.0) Pub Date : 2024-01-18 V.K. Oikonomou, Pyotr Tsyba, Olga Razina
In this work we study the GW170817-compatible Einstein-Gauss–Bonnet theories during the reheating and the end of inflationary era. Given the scalar field potential V(ϕ) which can have some intrinsic importance for the theory, determining the scalar coupling function ξ(ϕ) can be cumbersome due to lack of analyticity. The GW170817 observation constrains the scalar coupling function and the scalar field
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Comment on “Effects of (1+2)-dimensional circularly symmetric and static traversable wormhole with cosmic string on oscillator field” Ann. Phys. (IF 3.0) Pub Date : 2024-01-10 Francisco M. Fernández
We analyze the mathematical results and physical conclusions put forward in a recent paper about “the relativistic quantum dynamics of an oscillator field described by the Klein–Gordon equation in a circularly symmetric and static (1+2)-dimensional traversable wormhole spacetime with cosmic strings”. We show that the existence of allowed oscillator frequencies conjectured by the author is a mere artifact
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Quantum speed limit time, non-Markovianity and quantum phase transition in extended XY spin chain with Dzyaloshinsky–Moriya interaction Ann. Phys. (IF 3.0) Pub Date : 2024-01-02 Muhammad Musadiq, Salman Khan
The effects of Dzyaloshinsky–Moriya (DM) interaction on quantum speed limit time (QSLT) of a single qubit and non-Markovianity of a coupled driven extended XY spin chain are investigated. The known quantum critical points of the model are left unaffected when DM interaction points in the direction of applied field. Anti-parallel DM interaction to the magnetic field leads to a new critical point of
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IR-finite thermal acceleration radiation Ann. Phys. (IF 3.0) Pub Date : 2024-01-04 Evgenii Ievlev, Michael R.R. Good, Eric V. Linder
A charge accelerating in a straight line following the Schwarzschild–Planck moving mirror motion emits thermal radiation for a finite period. Such a mirror motion demonstrates quantum purity and serves as a direct analogy of a black hole with unitary evolution and complete evaporation. Extending the analog to classical electron motion, we derive the emission spectrum, power radiated, and finite total
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Superquantum effects on physical systems from a hydrodynamic perspective Ann. Phys. (IF 3.0) Pub Date : 2024-01-03 Chia-Chun Chou
Employing a nonlinear time-dependent Schrödinger equation that describes the transition between quantum and classical regimes, we explore superquantum effects on physical systems from a hydrodynamic point of view. The degree of quantumness, a pivotal parameter in this transition equation, gauges the impact of quantum effects arising from the quantum potential. As this parameter varies continuously
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Classical radiation fields for scalar, electromagnetic, and gravitational waves with spacetime-symmetry breaking Ann. Phys. (IF 3.0) Pub Date : 2023-12-30 Quentin G. Bailey, Alexander S. Gard, Nils A. Nilsson, Rui Xu, Lijing Shao
An effective field theory framework is used to investigate some Lorentz-violating effects on the generation of electromagnetic and gravitational waves, complementing previous work on propagation. Specifically we find solutions to a modified, anisotropic wave equation, sourced by charge or fluid matter. We derive the radiation fields for scalars, classical electromagnetic radiation, and partial results
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Effects of electron inertia and finite-Larmor radius correction on Jeans instability of quantum plasma with the impact of cosmic pressure Ann. Phys. (IF 3.0) Pub Date : 2023-12-25 S. Mansuri, R.K. Pensia, H. Dashora, K. Gwala
We present a theoretical investigation of the Jeans instability in quantum plasma, taking into consideration cosmic ray (CR) pressure and diffusion effects using a generalized magneto-hydrodynamic (MHD) model. Our analysis incorporates finite electron inertia, finite electrical resistivity, and finite Larmor radius (FLR) correction. By applying the normal mode technique, we derive a unique form of
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More on the fact that Rastall = GR Ann. Phys. (IF 3.0) Pub Date : 2023-12-22 Alexey Golovnev
Rastall gravity is the same as General Relativity, with a simple algebraic redefinition of what is called the energy–momentum tensor. Despite it having been very clearly explained by M. Visser several years go, there are still many papers claiming big differences between the two formulations of gravitational equations and trying to use them for problems of physics. When going this way, the totally
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Gravitational collapse via Wheeler–DeWitt equation Ann. Phys. (IF 3.0) Pub Date : 2023-12-19 Davide Batic, M. Nowakowski
We analyze the Wheeler–DeWitt (WDW) equation in the context of a gravitational collapse. The physics of an expanding/collapsing universe and many details of a collapsing star can classically be described by the Robertson–Walker metric in which the WDW equation takes the form of a times-less Schrödinger equation. We set up the corresponding WDW potential for the collapse and study the solutions of the
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Cosmological constant Petrov type-N space–time in Ricci-inverse gravity Ann. Phys. (IF 3.0) Pub Date : 2023-12-23 F. Ahmed, J.C.R. de Souza, A.F. Santos
Our focus is on a specific type-N space–time that exhibits closed time-like curves in general relativity theory within the framework of Ricci-inverse gravity model. The matter-energy content is solely composed of a pure radiation field, and it adheres to the energy conditions while featuring a negative cosmological constant. One of the key findings in this investigation is the non-zero determinant
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Thermodynamics of 4D-EGB black holes in the quintessential phase space Ann. Phys. (IF 3.0) Pub Date : 2023-12-21 Yahya Ladghami, Brahim Asfour, Aatifa Bargach, Ahmed Errahmani, Taoufik Ouali
In this paper, we examine the 4D-EGB black holes in the quintessential phase space, where the quintessence dark energy surrounds the 4D-EGB black hole. We study the effect of quintessence dark energy on thermodynamic behavior of 4D-EGB black holes i.e. the phase transition and critical phenomena. For a specific condition, we recover the Van der Waals equation of state as the Gauss–Bonnet coupling plays
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Monatomic gas as a singular limit of relativistic theory of 15 moments with non-linear contribution of microscopic energy of molecular internal mode Ann. Phys. (IF 3.0) Pub Date : 2023-12-16 Takashi Arima, Maria Cristina Carrisi
Recently a new relativistic model of polyatomic gases has been proposed, by Arima-Carrisi-Pennisi-Ruggeri (2022), in the context of Rational Extended Thermodynamics. It is based on a hierarchy of 15 moments of the Boltzmann–Chernikov equation that appropriately takes into account the non-linear contribution of the microscopic total energy of the molecule (the sum of the rest energy and of the energy
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On the consequences of Raychaudhuri equation in Kantowski-Sachs space-time Ann. Phys. (IF 3.0) Pub Date : 2023-12-19 Madhukrishna Chakraborty, Subenoy Chakraborty
The paper aims to study the geometry and physics of the Raychaudhuri equation (RE) in the background of a homogeneous and anisotropic space–time described by Kantowski–Sachs (KS) metric. Role of anisotropy/shear in the context of convergence and possible avoidance of singularity has been analyzed subject to a physically motivated constraint. Moreover, using a suitable transformation the first order
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A coherent state approach to the Casimir effect for a massive scalar field in a noncommutative spacetime Ann. Phys. (IF 3.0) Pub Date : 2023-12-16 C.A. Escobar, A. Martín-Ruiz, Román Linares, J.M. Silva
In this paper we investigate the Casimir effect in the classical geometry of two parallel conducting plates, separated by a distance L, for a massive scalar field in a noncommutative spacetime within a coherent state approach. Noncommutative geometry is implemented by means of modified commutation relations for the spacetime coordinates, thus introducing a fundamental length scale l in the theory.
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Non-Abelian Landau-Ginzburg theory of ferromagnetic superconductivity and mixing between U(1) and SU(2) gauge bosons Ann. Phys. (IF 3.0) Pub Date : 2023-12-14 Y.M. Cho, Franklin H. Cho
We propose an effective theory of non-Abelian superconductivity, an SU(2)xU(1) extension of the Abelian Landau-Ginzburg theory, which could be viewed as an effective theory of ferromagnetic superconductivity made of spin-up and spin-down doublet Cooper pair. Just like the Abelian Landau-Ginzburg theory it has the U(1) electromagnetic interaction, but the new ingredient is the non-Abelian SU(2) gauge
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Potential scatterings in the L2 space : (2) Rigorous scattering probability of wave packets Ann. Phys. (IF 3.0) Pub Date : 2023-12-13 Kenzo Ishikawa
In this study, potential scatterings are formulated in experimental setups with Gaussian wave packets in accordance with a probability principle and associativity of products. A breaking of an associativity is observed in scalar products with stationary scattering states in a majority of short-range potentials. Due to the breaking, states of different energies are not orthogonal and their superposition
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Two-particle bound states on a lattice Ann. Phys. (IF 3.0) Pub Date : 2023-12-15 Pavel E. Kornilovitch
Two-particle lattice states are important for physics of magnetism, superconducting oxides, and cold quantum gases. The quantum-mechanical lattice problem is exactly solvable for finite-range interaction potentials. A two-body Schrödinder equation can be reduced to a system of linear equations whose numbers scale with the number of interacting sites. For the simplest cases such as on-site or nearest-neighbor
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Amplitude representation of Landau–Lifshitz equation and its application to ferromagnetic films Ann. Phys. (IF 3.0) Pub Date : 2023-12-14 Gang Li, Valery Pokrovsky
In this article we develop a systematic approach to the solution of the Landau–Lifshitz equation in terms of the magnon wave function ψr and apply it to physical phenomena in a thin ferromagnetic film. In this article we represent the modern state of art for the properties of ferromagnetic films and the pumping-induced Bose–Einstein condensation of magnons in them at room temperature. It can be considered
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Thermodynamic topology of black holes from bulk-boundary, extended, and restricted phase space perspectives Ann. Phys. (IF 3.0) Pub Date : 2023-12-07 Jafar Sadeghi, Mohmmad Ali S. Afshar, Saeed Noori Gashti, Mohammad Reza Alipour
In this article, we investigate the thermodynamic topology of some black holes, namely AdS Reissner Nordstrom (R–N), AdS Einstein–Gauss–Bonnet (EGB), and AdS Einstein-power-Yang–Mills (EPYM), from different frameworks: bulk-boundary (BB) and restricted phase space (RPS). Using the generalized off-shell Helmholtz free energy method, we calculate the thermodynamic topology of the selected black holes
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Unification: Emergent universe followed by inflation and dark epochs from multi-field theory Ann. Phys. (IF 3.0) Pub Date : 2023-12-09 Eduardo Guendelman, Ramón Herrera
A two scalar field model that incorporates non Riemannian Measures of integration or usually called Two Measures Theory (TMT) is introduced, in order to unify the early and present universe. In the Einstein frame a K-essence is generated and as a consequence for the early universe, we can have a Non Singular Emergent universe followed by Inflation and for the present universe dark epochs with consistent
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Mixed state entanglement measures for the dipole deformed supersymmetric Yang–Mills theory Ann. Phys. (IF 3.0) Pub Date : 2023-12-06 Anirban Roy Chowdhury, Ashis Saha, Sunandan Gangopadhyay
Two different entanglement measures for mixed states, namely, the entanglement of purification and entanglement negativity has been holographically computed for the dipole deformed supersymmetric Yang–Mills (SYM) theory by considering its gravity dual. The dipole deformation induces non-locality in the SYM theory which is characterized by a length-scale a=λ12L̃. Considering a strip like subsystem of
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Non-Noetherian conformal scalar fields Ann. Phys. (IF 3.0) Pub Date : 2023-12-06 Eloy Ayón-Beato, Mokhtar Hassaine
Recently, an extension of the standard four-dimensional scalar conformal action, yielding a second-order field equation that remains conformally invariant, was proposed. In spite of this, the corresponding action is not invariant under conformal transformations and this motivates us to define the notion of non-Noetherian conformal scalar field. In this article, we go further by determining the most