This article is a theoretical development of the gravitational model through an econophysical approach and physical tools. Therefore, this paper attempts to answer the following research question: “Can physics still contribute to the development of the gravitational model in economics?”. To tackle the question, this paper begins with an overview of the basic concepts of Newton’s universal gravitational theory, which was first applied in economics by the distinguished American scientist Isard (1954). Then the concepts and formulas of gravitational fields in physics will be translated into economics, thus reviving Isard’s original multilateralism through the elaboration of an extension of his model apt to describe the multilateralism and multi-country exchanges which characterize international trade. In this regard, the superposition principle of vector is used to offer vector analysis as a tool for mapping the interactions between the economic forces produced by the individual gravitational fields of different countries. A representation of the gravitational field of the European market will be provided. The field concept will extend the analysis from bilateral flows to the analysis of markets in two dimensions.

本文是通过经济物理方法和物理工具对引力模型进行的理论发展。因此，本文试图回答以下研究问题：“物理学还能为经济学中引力模型的发展做出贡献吗？”。为了解决这个问题，本文首先概述了牛顿万有引力理论的基本概念，该理论首先由美国杰出科学家伊萨德（Isard，1954）应用于经济学。然后，物理学中引力场的概念和公式将被转化为经济学，从而通过详细阐述其模型的扩展来复兴伊萨德最初的多边主义，该模型易于描述作为国际贸易特征的多边主义和多国交流。在这方面，矢量叠加原理用于提供矢量分析作为绘制不同国家各自引力场产生的经济力量之间相互作用的工具。将提供欧洲市场引力场的表示。场概念将把分析从双边流动扩展到二维市场分析。