κ-闵可夫斯基时空中的熵力和弹跳行为

IF 4.5 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Physics Letters B Pub Date : 2025-06-20 DOI:10.1016/j.physletb.2025.139670

Vishnu Rajagopal , Puxun Wu

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引用次数: 0

摘要

我们将引力的熵力描述推广到-闵可夫斯基时空，并推导出牛顿引力的-变形修正。利用这一点，我们展示了对数校正作为贝肯斯坦-霍金熵的一阶变形校正项的出现。在此基础上，推导了κ变形的Friedmann方程，研究了κ变形时空中尺度因子的演化。最后，我们证明了κ-变形参数通过提供空间平坦封闭宇宙的弹跳行为来避免了早期宇宙的初始奇点。

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Entropic force and bouncing behaviour in κ-Minkowski space-time

We generalise the entropic force description of gravity into κ-Minkowski space-time and derive the κ-deformed corrections to the Newton's gravitational force. Using this we show the appearance of logarithmic correction as the first order κ-deformed correction term to Bekenstein-Hawking entropy. Further we also derive the κ-deformed Friedmann equations and study the evolution of scale factor in κ-deformed space-time. Finally we show that the κ-deformation parameter avoids the initial singularity in early universe by providing a bounce behaviour for the case of spatially flat and closed universe.

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来源期刊

Physics Letters B 物理-物理：综合

CiteScore

9.10

自引率

6.80%

发文量

647

审稿时长

3 months

期刊介绍： Physics Letters B ensures the rapid publication of important new results in particle physics, nuclear physics and cosmology. Specialized editors are responsible for contributions in experimental nuclear physics, theoretical nuclear physics, experimental high-energy physics, theoretical high-energy physics, and astrophysics.