f(T)重力下的黑弹

IF 2.1 4区 物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS General Relativity and Gravitation Pub Date : 2022-12-28 DOI:10.1007/s10714-022-03048-6
Manuel E. Rodrigues, Ednaldo L. B. Junior
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引用次数: 7

摘要

研究了四维f(T)重力下黑弹跳时空的新解。首先,我们给出了对角四分体的情况,其中运动方程中出现了一个限制,该限制分为零扭转、常扭转和远平行三种情况。零能条件(NEC)仍然总是被违反,这意味着其他能量条件也被违反。解在整个时空中是规则的,零扭转解在事件视界内外的能量条件之间呈现不连续。其次,我们给出了非对角四分体的情况。这种情况在t中分为Simpson-Visser型模型和二次型模型。NEC继续被违反,意味着其他能量条件的违反。解在所有时空中都是规则的。一个有趣的结果是,由于与度规相关的面积可能与\(4\pi r^2\)不同,在通常的f(T)中建立的不去输出定理被违反,导致新的可能性\( g_{00}=-g^{11}\),对于度规分量。
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Black-bounce in f(T) gravity

We study new solutions of black-bounce spacetimes formulated in f(T) gravity in four dimensions. First, we present the case of diagonal tetrad where a restriction appears in the equations of motion that is divided into the cases of zero torsion, constant torsion and teleparallel. The Null Energy Condition (NEC) is still always violated, which implies that the other energy conditions are also violated. The solutions are regular throughout spacetime and the zero torsion solution presents discontinuity between the energy conditions inside and outside the event horizon. Second, we present the case of non-diagonal tetrads. This case is divided into a Simpson-Visser type model and a quadratic model in T. The NEC continues to be violated, implying the violation of the other energy conditions. The solutions are regular in all spacetimes. An interesting result is that due to the possibility that the area associated with the metric is different from \(4\pi r^2\), the no-go output theorem established in the usual f(T) is violated, resulting in the new possibility \( g_{00}=-g^{11}\), for metric components.

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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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