Static, spherically symmetric solutions in f(Q)-gravity and in nonmetricity scalar-tensor theory

IF 10.2 4区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS
Nikolaos Dimakis , Petros A. Terzis , Andronikos Paliathanasis , Theodosios Christodoulakis
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引用次数: 0

Abstract

We solve the gravitational field equations for a static, spherically symmetric spacetime within the framework of the symmetric teleparallel theory of gravity. Specifically, we derive new solutions within the context of power-law f(Q) gravity and the nonmetricity scalar-tensor theory. For the connection in the non-coincidence gauge, we present the point-like Lagrangian that describes the employed field equations. Furthermore, we construct two conservation laws, and for different values of these conserved quantities, we analytically solve the gravitational field equations. New solutions are obtained, we investigate their physical properties and their general relativistic limit. Finally, we discuss the algebraic properties for the derived spacetimes.
f(Q)-重力和非度量量-张量理论的静态球对称解
在对称遥平行引力理论的框架下,求解了静态球对称时空的引力场方程。具体地说,我们在幂律f(Q)引力和非度量标量张量理论的背景下推导了新的解。对于非符合规范中的连接,我们给出了描述所采用的场方程的类点拉格朗日量。在此基础上,构造了两个守恒定律,并对守恒量的不同取值,解析求解了引力场方程。得到了新的解,研究了它们的物理性质和广义相对论极限。最后,讨论了所得时空的代数性质。
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来源期刊
Journal of High Energy Astrophysics
Journal of High Energy Astrophysics Earth and Planetary Sciences-Space and Planetary Science
CiteScore
9.70
自引率
5.30%
发文量
38
审稿时长
65 days
期刊介绍: The journal welcomes manuscripts on theoretical models, simulations, and observations of highly energetic astrophysical objects both in our Galaxy and beyond. Among those, black holes at all scales, neutron stars, pulsars and their nebula, binaries, novae and supernovae, their remnants, active galaxies, and clusters are just a few examples. The journal will consider research across the whole electromagnetic spectrum, as well as research using various messengers, such as gravitational waves or neutrinos. Effects of high-energy phenomena on cosmology and star-formation, results from dedicated surveys expanding the knowledge of extreme environments, and astrophysical implications of dark matter are also welcomed topics.
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