拉斯塔尔引力和非真空时空中的虫洞

IF 1.2 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Gravitation and Cosmology Pub Date : 2024-11-22 DOI:10.1134/S0202289324700397

Ayan Banerjee, Safiqul Islam, Archana Dixit, Anirudh Pradhan

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引用次数: 0

摘要

我们提出了拉斯塔尔引力中的静态球对称虫洞系列。这种修正理论的一个独特特征是违反了能量-动量张量的局部守恒。这些虫洞是通过对满足无迹约束的物质应用特定的状态方程来支持的[Kar 和 Sahdev：Phys. Rev D 52, 2030 (1995)]。接下来，我们对红移函数施加了一些限制，并对经典可穿越虫洞的场方程进行了分析求解。最后，我们研究了这些时间相关几何中有关能量条件和体积积分量子的一些问题。

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Wormholes in Rastall Gravity and Nonvacuum Space-Time

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Wormholes in Rastall Gravity and Nonvacuum Space-Time

We present a family of static and spherically symmetric wormholes in Rastall gravity. A unique characteristic of this modified theory is violation of the local conservation of the energy-momentum tensor. These wormholes are supported by applying a specific equation of state for matter satisfying the tracelessness constraint [Kar and Sahdev: Phys. Rev D 52, 2030 (1995)]. Next, we impose some restrictions on the redshift function and solve the field equations analytically for a classical traversable wormholes. Finally, we investigate some issues concerning the energy conditions and the volume integral quantifier in these time-interdependent geometries.

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来源期刊

Gravitation and Cosmology ASTRONOMY & ASTROPHYSICS-

CiteScore

1.70

自引率

22.20%

发文量

审稿时长

>12 weeks

期刊介绍： Gravitation and Cosmology is a peer-reviewed periodical, dealing with the full range of topics of gravitational physics and relativistic cosmology and published under the auspices of the Russian Gravitation Society and Peoplesâ€™ Friendship University of Russia. The journal publishes research papers, review articles and brief communications on the following fields: theoretical (classical and quantum) gravitation; relativistic astrophysics and cosmology, exact solutions and modern mathematical methods in gravitation and cosmology, including Lie groups, geometry and topology; unification theories including gravitation; fundamental physical constants and their possible variations; fundamental gravity experiments on Earth and in space; related topics. It also publishes selected old papers which have not lost their topicality but were previously published only in Russian and were not available to the worldwide research community