广义κ(R,T)-函数中的守恒虫洞

IF 10.2 4区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS
Ksh. Newton Singh , G.R.P. Teruel , S.K. Maurya , Tanmoy Chowdhury , Farook Rahaman
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引用次数: 0

摘要

我们对κ(R,T)引力中具有线性和非线性函数的虫洞配置进行了详尽的研究。该模型假设莫里斯-索恩时空(Morris-Thorne spacetime),其中的红移和形状函数通过应力-能量张量的非协变守恒方程与时空的物质包含和几何形状相关联。第一种方案是假设红移函数恒定,从而产生一个渐近非平坦的虫洞(WH)。其余的解决方案在两种情况下进行了探索。首先,假设线性状态方程 p(r)=ωρ(r) 以及不同形式的 κ(R,T) 函数。这足以推导出 b(r)=r0(r0r)1/ω 形式的形状函数。其次,假设形状函数的特定选择符合虫洞配置要求。所有解都满足耀斑条件,近似平坦,并有幻影能量支持。此外,我们还使用数值方法生成了嵌入表面及其旋转,通过κ(R,T)函数了解了咽喉长度对耦合参数的影响。最后,我们还计算了平均空能条件,所有 WH 模型都满足这一条件,表明打开 WH 喉管所需的外来物质最少。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Conservative wormholes in generalized κ(R,T)- function
We present an exhaustive study of wormhole configurations in κ(R,T) gravity with linear and non-linear functions. The model assumed Morris-Thorne spacetime where the redshift and shape functions linked with the matter contain and geometry of the spacetime through non-covariant conservation equation of the stress-energy tensor. The first solution was explored assuming a constant redshift function that leads to a wormhole (WH) which is asymptotically non-flat. The remaining solutions were explored in two cases. Firstly, assuming a linear equation of state p(r)=ωρ(r) along with different forms of κ(R,T)-function. This proved enough to derive a shape function of the form b(r)=r0(r0r)1/ω. Secondly, by assuming specific choices of the shape function consistent with the wormhole configuration requirements. All the solutions fulfill flare-out condition, asymptotically flat and supported by phantom energy. Further, the embedding surface and its revolution has been generated using numerical method to see how the length of the throat is affected of the coupling parameters through κ(R,T) function. At the end, we have also calculated the average null energy condition, which is satisfied by all the WH models signifying minimum exotic matter is required to open the WH throats.
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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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