带有扭转的全息暗能量

IF 0.8 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY Journal of the Korean Physical Society Pub Date : 2024-08-08 DOI:10.1007/s40042-024-01154-z
Yongjun Yun, Jungjai Lee
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引用次数: 0

摘要

我们考虑了满足宇宙学原理的具有轴向扭转的全息暗能量模型。随后,通过使用弗里德曼方程的扭转类似物来求解爱因斯坦-卡尔坦引力理论的新方程,我们得到了该模型中暗能量的状态方程。我们发现,以粒子视界为红外截止点的扩展全息暗能量并不能给出宇宙的加速膨胀。同时,采用未来事件穹界作为红外截止点仍然可以实现宇宙的加速膨胀。与此相反,以哈勃半径作为红外分界线有可能在轴向扭转的超光速区域实现宇宙的加速膨胀。更准确地说,扭转与物质密度的当前比率值(\gamma ^{0}=0.5)给出了暗能量的状态方程(\omega _\{Lambda }\cong -1\ )。
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Holographic dark energy with torsion

We consider the holographic dark energy model with axial torsion which satisfies the cosmological principle. Subsequently, by using the torsional analogs of Friedmann equations for the new equation from Einstein–Cartan gravity theory, we obtain the equation of state for dark energy in this model. We find that the extended holographic dark energy from the particle horizon as the infrared (IR) cut-off does not give the accelerating expansion of the universe. Also, employing the future event horizon as IR cut-off still achieves the accelerating expansion of the universe. In contrast, there is a possibility that the Hubble radius as IR cut-off achieves the accelerating expansion of the universe in superluminal region for axial torsion. More precisely, the current value of ratio for torsion to the matter density, \(\gamma ^{0}=0.5\) gives the equation of state of dark energy \(\omega _{\Lambda }\cong -1\).

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来源期刊
Journal of the Korean Physical Society
Journal of the Korean Physical Society PHYSICS, MULTIDISCIPLINARY-
CiteScore
1.20
自引率
16.70%
发文量
276
审稿时长
5.5 months
期刊介绍: The Journal of the Korean Physical Society (JKPS) covers all fields of physics spanning from statistical physics and condensed matter physics to particle physics. The manuscript to be published in JKPS is required to hold the originality, significance, and recent completeness. The journal is composed of Full paper, Letters, and Brief sections. In addition, featured articles with outstanding results are selected by the Editorial board and introduced in the online version. For emphasis on aspect of international journal, several world-distinguished researchers join the Editorial board. High quality of papers may be express-published when it is recommended or requested.
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