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arXiv 2006.05913gr-qchep-th
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Finsler-Randers引力中的类Schwarzschild解

Schwarzschild-like solutions in Finsler-Randers gravity

A. Triantafyllopoulos, S. Basilakos, E. Kapsabelis, P. C. Stavrinos

摘要:

在这项工作中,我们扩展了第一次球对称Schwarzschild和Schwarzschild-De Sitter的解决方案与Finsler-Randers型扰动,这是由一个共向量$A_γ$。这给了一个局部各向异性字符的度量,并导致偏离黎曼模型的重力。这个研究的一个自然框架是时空流形的洛伦兹切丛。我们将广义场方程应用于扰动度规,并导出了共矢量$A_γ$的动力学。最后,我们找到了Schwarzschild-Randers时空中的类时、类空和零路径,数值求解了类时路径,并与经典的广义相对论测地线进行了比较。所得解是新的,丰富了相应的文献。

英文摘要:

In this work, we extend for the first time the spherically symmetric Schwarzschild and Schwarzschild-De Sitter solutions with a Finsler-Randers-type perturbation which is generated by a covector $A_γ$. This gives a locally anisotropic character to the metric and induces a deviation from the Riemannian models of gravity. A natural framework for this study is the Lorentz tangent bundle of a spacetime manifold. We apply the generalized field equations to the perturbed metric and derive the dynamics for the covector $A_γ$. Finally, we find the timelike, spacelike and null paths on the Schwarzschild-Randers spacetime, we solve the timelike ones numerically and we compare them with the classic geodesics of general relativity. The obtained solutions are new and they enrich the corresponding literature.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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