论文标题
在最小CPC模型中，对不同基本常数的观察性约束
Observational constraints on varying fundamental constants in a minimal CPC model
论文作者
论文摘要
提出了基于重力的共同物理耦合（CPC）框架的最小模型。 CPC框架是基于公制的四维Riemannian流形的假设，在该假设中，协变量保守的应力 - 能量张量充当了与Einstein场方程正式相同的场方程的来源，但在couplings $ \ \ couplings $ \ {g {g，λ\ s simult允许的位置。最小的CPC模型将$λ$作为真正的常数，而$ c $和$ g $以纠缠的方式变化，与比安奇的身份和上述假设一致。该模型使用最新的Galaxy簇气体质量分数观测数据受到限制。我们的结果表明函数$ c（z）$和$ g \ left（z \ right）= g_ {0} \ left（c/c_ {0} \ right）^{4} $与$ c = c（z）$的三个不同参数的常数耦合兼容。
A minimal model based on the Co-varying Physical Couplings (CPC) framework for gravity is proposed. The CPC framework is based on the assumptions of a metric-compatible four-dimensional Riemannian manifold where a covariantly conserved stress-energy tensor acts as source of the field equations which are formally the same as Einstein field equations, but where the couplings $\{ G, c,Λ\}$ are allowed to vary simultaneously. The minimal CPC model takes $Λ$ as a genuine constant while $c$ and $G$ vary in an entangled way that is consistent with Bianchi identity and the aforementioned assumptions. The model is constrained using the most recent galaxy cluster gas mass fraction observational data. Our result indicates that the functions $c(z)$ and $G\left(z\right)=G_{0}\left(c/c_{0}\right)^{4}$ are compatible with constant couplings for the three different parameterizations of $c=c(z)$ adopted here.
