Dynamical Wormhole Solutions in f(R, T) Gravity

IF 2.8 4区 物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS
Yaghoub Heydarzade, Maryam Ranjbar
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引用次数: 0

Abstract

A class of f(RT) theories extends the Einstein-Hilbert action by incorporating a general function of R and T, the Ricci scalar and the trace of the ordinary energy-momentum tensor \(T_{\mu \nu }\), respectively, thereby introducing a specific modification to the Einstein’s field equations based on matter fields. Given that this modification is intrinsically tied to an energy-momentum tensor \(T_{\mu \nu }\) that a priori respects energy conditions, we explore the potential of f(RT) theories admitting wormhole configurations satisfying energy conditions, unlike General Relativity, which typically necessitates exotic matter sources. Consequently, we investigate the existence of dynamical wormhole geometries that either uphold energy conditions or minimize their violations within the framework of trace of energy-momentum tensor squared gravity. To ensure the generality of our study, we consider two distinct equations of state for the matter content and systematically classify possible solutions based on constraints related to the wormhole’s throat size, the coupling parameter of the theory, and the equation of state parameters.

f(R, T)重力下的动态虫洞解
一类f(R, T)理论通过R和T的一般函数、里奇标量和普通能量动量张量Tμν t_ {\mu\nu的迹来扩展爱因斯坦-希尔伯特作用,从而对基于物质场的爱因斯坦场方程进行了特定的修正。鉴于这种修正本质上与}先验地尊重能量条件的能量-动量张量Tμν t_ {\mu\nu}
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来源期刊
General Relativity and Gravitation
General Relativity and Gravitation 物理-天文与天体物理
CiteScore
4.60
自引率
3.60%
发文量
136
审稿时长
3 months
期刊介绍: General Relativity and Gravitation is a journal devoted to all aspects of modern gravitational science, and published under the auspices of the International Society on General Relativity and Gravitation. It welcomes in particular original articles on the following topics of current research: Analytical general relativity, including its interface with geometrical analysis Numerical relativity Theoretical and observational cosmology Relativistic astrophysics Gravitational waves: data analysis, astrophysical sources and detector science Extensions of general relativity Supergravity Gravitational aspects of string theory and its extensions Quantum gravity: canonical approaches, in particular loop quantum gravity, and path integral approaches, in particular spin foams, Regge calculus and dynamical triangulations Quantum field theory in curved spacetime Non-commutative geometry and gravitation Experimental gravity, in particular tests of general relativity The journal publishes articles on all theoretical and experimental aspects of modern general relativity and gravitation, as well as book reviews and historical articles of special interest.
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