德拉姆-加巴泽-托利类大质量引力中的非交换虫洞

IF 2.5 3区 物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS Nuclear Physics B Pub Date : 2024-07-09 DOI:10.1016/j.nuclphysb.2024.116621
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引用次数: 0

摘要

本文在非交换几何背景下研究了dRGT大质量引力中的虫洞方案。为了推导虫洞模型和零潮汐力,我们假设物质分布由高斯分布和洛伦兹分布给出。这两个模型的形状函数都涉及大质量引力参数 m2c1 和 m2c2。但由于大质量引力参数的作用,时空失去了渐近平坦性。我们注意到,渐近平坦性受到了大质量引力子的斥力效应的影响,它对时空几何产生了非常强烈的推动作用。我们观察到每个模型都违反了空能标准,这表明存在奇异物质,而奇异物质是维持虫洞的必要条件。外来物质是用体积积分量子来测量的。此外,通过利用 TOV 方程,我们发现该模型在静水平衡条件下是稳定的。最后,我们的研究还包括对引力产生的斥力影响的探索。我们的研究结果表明,斥引力的存在会导致光子沿着空大地线产生负偏转角。值得注意的是,在所研究的两种情况下,我们在所有 r0 值上都观测到了一致的负偏转角值。这种一致的负值明确显示了斥引力效应的存在。
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Noncommutative wormhole in de Rham-Gabadadze-Tolley like massive gravity

The wormhole solution in dRGT massive gravity is examined in this paper in the background of non-commutative geometry. In order to derive the wormhole model, along with the zero tidal force, we assume that the matter distribution is given by the Gaussian and Lorentzian distributions. The shape function in both models involves the massive gravity parameters m2c1 and m2c2. But the spacetime loses its asymptotic flatness due to the action of the massive gravity parameter. It is noticed that the asymptotic flatness is affected by the repulsive effect induced in the massive gravitons that push the spacetime geometry very strongly. We observed that each model violates the null energy criteria, indicating the presence of exotic matter which is necessary to sustain the wormholes. The exotic matter is measured using the volume integral quantifier. Moreover, it is discovered that the model is stable under the hydrostatic equilibrium condition by utilizing the TOV equation. Finally, our research encompassed an exploration of the repulsive influence exerted by gravity. Our findings demonstrated that the presence of repulsive gravity results in a negative deflection angle for photons following null geodesics. Remarkably, we consistently observed negative values for the deflection angle across all values of r0 in the two scenarios examined. This consistent negativity unequivocally signifies the manifestation of the repulsive gravity effect.

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来源期刊
Nuclear Physics B
Nuclear Physics B 物理-物理:粒子与场物理
CiteScore
5.50
自引率
7.10%
发文量
302
审稿时长
1 months
期刊介绍: Nuclear Physics B focuses on the domain of high energy physics, quantum field theory, statistical systems, and mathematical physics, and includes four main sections: high energy physics - phenomenology, high energy physics - theory, high energy physics - experiment, and quantum field theory, statistical systems, and mathematical physics. The emphasis is on original research papers (Frontiers Articles or Full Length Articles), but Review Articles are also welcome.
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