de Rham-Gabadadze-Tolley中虫洞模型的特性,类似具有特定物质密度的大质量引力

IF 4.2 2区 物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS The European Physical Journal C Pub Date : 2025-01-03 DOI:10.1140/epjc/s10052-024-13670-0
Piyali Bhar
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引用次数: 0

摘要

在研究虫洞几何的传统方法中,可穿越性需要外来物质的存在,这也提供了负重力效应来保持虫洞喉咙的打开。在de Rham-Gabadadze-Tolley (dRGT)质量引力理论中,我们给出了两种类型的WH解。我们通过选择一个静态球对称的背景几何度规,得到精确WH解的场方程。我们推导了两种不同选择的红移函数的WH几何。得到的WH解违反了所有的能量条件,包括零能量条件(NEC)。不同的图被用来说明虫洞在\(m^2c_1\)的合适范围内的行为,其中m是引力子的质量。我们观察到,由于重力的排斥作用,光子偏转角在\(m^2c_1\)的所有值下都变为负值。结果还表明,大质量引力子的排斥性碰撞对时空几何的推动非常强烈,以致影响了渐近平坦性。计算体积积分量子(VIQ)来确定违反零能条件的物质的数量。本文还讨论了模型的复杂性因素。
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Properties of the wormhole model in de Rham–Gabadadze–Tolley like massive gravity with specific matter density

In the conventional method of studying wormhole (WH) geometry, traversability requires the presence of exotic matter, which also provides negative gravity effects to keep the wormhole throat open. In de Rham–Gabadadze–Tolley (dRGT) massive gravity theory, we produce two types of WH solutions in our present paper. We obtain the field equations for exact WH solutions by selecting a static and spherically symmetric metric for the background geometry. We derive the WH geometry completely for the two different choices of redshift functions. The obtained WH solutions violate all the energy conditions, including the null energy condition (NEC). Various plots are used to illustrate the behavior of the wormhole for a suitable range of \(m^2c_1\), where m is the graviton mass. It is observed that the photon deflection angle becomes negative for all values of \(m^2c_1\) as a result of the repulsive action of gravity. It is also shown that the repulsive impact of massive gravitons pushes the spacetime geometry so strongly that the asymptotic flatness is affected. The volume integral quantifier (VIQ) is computed to determine the amounts of matter that violate the null energy condition. The complexity factor of the proposed model is also discussed.

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来源期刊
The European Physical Journal C
The European Physical Journal C 物理-物理:粒子与场物理
CiteScore
8.10
自引率
15.90%
发文量
1008
审稿时长
2-4 weeks
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