15 papers
Qualitative Shadow Anomaly as a Smoking-gun Signature of Nonmetricity
Zi-Chao Lin, Hao Yu, Yu-Xiao Liu +1
In general relativity and its metric-formalism extensions, the innermost stable circular orbit and the photon ring of a charged black hole contract as the charge increases. In this…
Evolution of Fermion Resonance in Thick Brane
Chun-Chun Zhu, Qin Tan, Yu-Peng Zhang +1
In this work, we investigate numerical evolution of massive Kaluza-Klein (KK) modes of a Dirac field on a thick brane. We deduce the Dirac equation in five-dimensional spacetime, a…
Thermodynamic nature of black holes in coexistence region
Shao-Wen Wei, Yu-Xiao Liu
Studying the system state of coexistence regions will peek into to reveal microscopic interactions between different phases of a thermodynamic system. However, there is no effectiv…
Aschenbach effect and circular orbits in static and spherically symmetric black hole backgrounds
Shao-Wen Wei, Yu-Xiao Liu
The Aschenbach effect, the increasing behavior of the angular velocity of a timelike circular orbit with its radius coordinate, is found to extensively exist in rapidly spinning bl…
Holographic Complexity and Phase Transition for AdS Black Holes
Hong-Yue Jiang, Meng-Ting Wang, Yu-Xiao Liu
Recently, the complexity equals any gravitational observable conjecture has been proposed in [Phys. Rev. Lett. 128, 081602 (2022)], which is an extension of the complexity equals v…
Entropies of the various components of the universe
Hao Yu, Yu-Xiao Liu, Jin Li
In this work, we study the entropies of photons, dust (baryonic matter), dark matter, and dark energy in the context of cosmology. When these components expand freely with the univ…