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21 papers · 2 filters
General proof of the entropy principle for self-gravitating fluid in f(R) Gravity
Xiongjun Fang, Minyong Guo, Jiliang Jing
The discussions on the connection between gravity and thermodynamics attract much attention recently. We consider a static self-gravitating perfect fluid system in gravity,…
Primordial non-Gaussianity in warm inflation using formalism
Xiao-Min Zhang, Hong-Yang Ma, Peng-Cheng Chu +2
A formalism is used to study the non-Gaussianity of the primordial curvature perturbation on an uniform density hypersurfaces generated by the warm inflation for the first tim…
Loop quantum cosmology: The horizon problem and the probability of inflation
Long Chen, Jian-Yang Zhu
Anomaly-free perturbations of loop quantum cosmology reveal a deformed space-time structure, in which the signature changes when the energy density is . Furthermore, in lo…
A static spherically symmetric thin shell wormhole colliding with a spherical thin shell
Sijie Gao, Xiaobao Wang
We consider a static spherically symmetric thin shell wormhole collides with another thin shell consisting of ordinary matter. By employing the geometrical constraint, which leads…
Phase transition of holographic entanglement entropy in massive gravity
Xiao-Xiong Zeng, Hongbao Zhang, Li-Fang Li
The phase structure of holographic entanglement entropy is studied in massive gravity for the quantum systems with finite and infinite volumes, which in the bulk is dual to calcula…
An Exploration of the Black Hole Entropy via the Weyl Tensor
Nan Li, Xiao-Long Li, Shu-Peng Song
The Weyl tensor is the trace-free part of the Riemann tensor. Therefore, it is independent of the energy-momentum tensor and is thus not linked to the dynamics of gravitational fie…