Black Holes and Cosmology in Holographic Duality and Gravitational Waves

全息二象性和引力波中的黑洞和宇宙学

• 批准号: 18F18315
• 负责人: 向山 信治
• 金额: $ 1.41万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2018
• 资助国家: 日本
• 起止时间: 2018-11-09 至 2021-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18F18315/
• 关键词: gravitation; cosmology; holographic principle; gravitatioal waves

Two journal papers have been published in FY2020:1.1] In "Universal Upper Bound on the Inflationary Energy Scale from the Trans-Planckian Censorship Conjecture" [Phys. Rev. D 102, 021301 (2020)], we studied the constraint on the inflationary energy scale from the recently proposed Trans-Planckian Censorship Conjecture (TCC). We found a universal upper bound on the inflationary Hubble expansion rate H, which is solely determined by the reheating temperature: H < T0/Tr, where T0 is the photon temperature today. The upper limit can be saturated by a post-inflationary oscillatory stage with the critical equation-of-state parameter w=-1/3, or by an inflation model with multiple stages. In the lowest reheating temperature required for big bang nucleosynthesis, the upper bound on the tensor-to-scalar ratio r at the CMB scales is r < 10^{－8}, which can be realized in some string-inspired inflation models.1.2] In "Notes on the Quantum Corrections of Swampland and Trans-Planckian Censorship Conjecture" [Phys.Lett. B 816 (2021) 136245], we discussed the de Sitter swampland and trans-Planckian censorship conjectures (TCC) from the entropy bound with quantum corrections, namely quantum version of the Bousso bound and energy conditions. We included the typical contributions from the entanglement entropy in quasi-de Sitter spacetime. The TCC is not much corrected, whereas the bounds on de Sitter swampland conjecture from energy conditions can be relaxed due to quantum corrections.

两篇期刊论文在20020财年中发表了：“来自跨普兰克审查构想的通货膨胀能量量表的通用上限” [Phys。 Rev. D 102，021301（2020）]，我们研究了最近提议的Trans-Planckian审查制度猜想（TCC）对通货膨胀能量表的限制。我们在通货膨胀哈勃膨胀速率H上发现了通用上限H，该结合仅由加热温度确定：H <t0/tr，其中T0是当今的光子温度。上限可以通过通货膨胀后的振荡阶段饱和，具有关键状态方程参数W = -1/3，也可以通过具有多个阶段的通货膨胀模型来饱和。在大爆炸核渗透合成所需的最低重新温度中，在CMB量表处的张张量比r上的上限为r <10^{ - 8}，可以在某些字符串启发的通货膨胀模型中实现。1.2]在“对摩擦量较高的量子校正和换档的量子上的注释”中。 b 816（2021）136245]，我们从熵结合的距量子校正（即Bousso结合和能量条件的量子）中讨论了De Sitter Swampland和Trans-Planckian审查猜想（TCC）。我们包括了Quasi-de保姆时空中纠缠熵的典型贡献。 TCC的校正并不多，而由量子校正则可以放松出现能量条件下的STAMPLAND概念的边界。

项目成果

Holographic approach to entanglement entropy in disordered systems

• DOI: 10.1103/physrevd.99.046019
• 发表时间: 2018-03
• 期刊: Physical Review D
• 影响因子: 5
• 作者: R. Narayanan;Chanyong Park;Yun-Long Zhang

Bell inequality in the holographic EPR pair

• DOI: 10.1016/j.physletb.2019.02.012
• 发表时间: 2016-12
• 期刊: Physics Letters B
• 影响因子: 4.4
• 作者: Jiunn-Wei Chen;Sichun Sun;Yun-Long Zhang

Notes on quantum corrections of swampland and trans-Planckian censorship conjectures

• DOI: 10.1016/j.physletb.2021.136245
• 发表时间: 2019-12
• 期刊: Physics Letters B
• 影响因子: 4.4
• 作者: Sichun Sun;Yun-Long Zhang

Gravitational Waves and Possible Fast Radio Bursts from Axion Clumps

• DOI: 10.1103/physrevd.104.103009
• 发表时间: 2020-03
• 期刊: arXiv: High Energy Physics - Phenomenology
• 作者: Sichun Sun;Yun-Long Zhang

Holographic model of the dark fluid in late time universe

宇宙晚期暗流体的全息模型

• 发表时间: 2019
• 作者: Narayanan Rajesh;Park Chanyong;Zhang Yun-Long;Yun-Long Zhang;Zhang Yun-Long
• 通讯作者: Zhang Yun-Long