5 papers
Extremalization approach to black hole thermodynamics: perturbations around higher-derivative gravities
Aonan Zhang, Qiang Wang, Yong Xiao
When higher-derivative terms are added to a gravitational action, black hole solutions and their thermodynamic properties are generally corrected. Recent progress has shown that, b…
Explicit and covariant formula for thermodynamic volume in extended black hole thermodynamics
Yong Xiao, Yu-Xiao Liu, Yu Tian +1
In extended black hole thermodynamics, the cosmological constant and other couplings are treated as thermodynamic variables, yielding the first law $\tildeδM = T\tildeδS+Ω\tilde…
Validity of the Background Subtraction Method for Black Hole Thermodynamics in Matter-Coupled Gravity Theories
Yong Xiao, Aonan Zhang
The background subtraction method has long served as a practical tool for computing the Euclidean action and thermodynamic quantities of black holes. While its equivalence to the I…
A universal relation among Euclidean integrals for black holes in higher-derivative gravity theories
Yong Xiao, Qiang Wang, Aonan Zhang
In this paper, we establish a universal equality governing Euclidean integrals of gravitational actions in higher-derivative theories. This relation is shown to hold universally fo…
First order corrections to black hole thermodynamics: a simple approach enhanced
Yong Xiao, Yue-Ying Liu
The inclusion of higher derivative terms in the gravitational action brings about corrections to the original forms of black hole solutions and thermodynamics. A simple and valuabl…