论文标题
标量张量热力学的隐形亚稳态
Stealth metastable state of scalar-tensor thermodynamics
论文作者
论文摘要
我们研究了标量调节重力的最新热力学中的一个难题，其中一般相对论是平衡和标量调节重力的零温度状态，是有效耗散液的非平衡构型。证明具有恒定正温度的Brans-Dicke重力的隐形解决方案与有效液体的亚稳态状态相似，并且患有不稳定性。稳定性分析采用了Bardeen-ellis-Bruni-hwang量规形式的版本，用于宇宙学的扰动，适合于修饰的重力。亚稳态被张量扰动破坏。
We investigate a puzzle in the recent thermodynamics of scalar-tensor gravity, in which general relativity is a zero-temperature state of equilibrium and scalar-tensor gravity is the non-equilibrium configuration of an effective dissipative fluid. A stealth solution of Brans-Dicke gravity with constant positive temperature is shown to be analogous to a metastable state for the effective fluid and to suffer from an instability. The stability analysis employs a version of the Bardeen-Ellis-Bruni-Hwang gauge-invariant formalism for cosmological perturbations adapted to modified gravity. The metastable state is destroyed by tensor perturbations.
