线性广义相对论中一个强宇宙学耦合质量增长解
A Strong Cosmologically Coupled Mass Growth Solution in Linearized General Relativity
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中文总结 AI 辅助
该研究在线性广义相对论中构造了一个质量随宇宙膨胀按$a^\kappa$增长的黑洞解,其中$\kappa=3$时出现能量化真空云,为宇宙学耦合黑洞解释加速膨胀提供了可观测检验的新途径。
中文摘要 AI 辅助
DESI数据发布2提高了人们对宇宙学耦合黑洞(CCBHs)作为晚期加速膨胀解释的兴趣,但已知的CCBH模型增长太慢,无法驱动这一膨胀。我们在线性阶构造了一个广义相对论解,其Hernandez-Misner-Sharp质量随宇宙膨胀被动地按$a^\kappa$增长。常数$\kappa$进入Weyl和应力张量算符的所有本征值,因此增长在自由场和物质扇区中都是明确物理的。该解在恒星坍缩致密天体相关的时空上是因果的。在$\kappa = 3$时出现一个能量化真空云,补充了其他地方预测的能量化真空黑洞质量的$a^3$标度。这迈向$\kappa \sim 3$ CCBH精确解的第一步使得利用脉冲星双星进行观测测试成为可能。
英文摘要
DESI Data Release 2 has heightened interest in cosmologically coupled black holes (CCBHs) as an explanation for accelerating late-time expansion, but known models for CCBHs grow too slowly to drive it. We construct at linear order a solution to General Relativity whose Hernandez-Misner-Sharp mass passively grows $\propto a^κ$ as the universe expands. The constant $κ$ enters all eigenvalues of the Weyl and stress-tensor operators, so growth is unambiguously physical in both free-field and material sectors. The solution is causal over spacetime relevant for stellar collapse compact objects. A cloud of energized vacuum emerges at $κ= 3$, complementing the $a^3$ scaling predicted elsewhere for the masses of energized vacuum black holes. This first step toward $κ\sim 3$ CCBH exact solutions enables observational tests with pulsar binaries.
发表机构
- Arizona State University(亚利桑那州立大学)
- University of Hawai‘i at Mānoa(夏威夷大学马诺阿分校)
- University of Trento(特伦托大学)
- Trento Institute for Fundamental Physics and Applications TIFPA-INFN(特伦托基础物理与应用研究所)
- Rutgers University(罗格斯大学)
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