arXiv subjects

Bohuslav Matouš

Publications and source records attributed to Bohuslav Matouš.

2 recordsLinked to original sources

arXiv2024

Is The Internal Entropy of F(R)-Gravity Really An Entropy?

This paper connects two methods for finding the functional of entropy in F(R)-Gravity: Padmanabhan's and Hammad's. The resulting approach is simple to follow and yields entropy functional, which can be separated into two parts. The part unknown in General Relativity is often called in the literature as an internal entropy and this paper points on incompatibility between the internal entropy found from the entropy functional and the one found using conventional approach.

gr-qc↗

arXiv2023

Clausius Equation for Horizons in $F(R)$ Gravity

Covariant Hamiltonian formulation of $F(R)$ gravity is used to find variation of surface Hamiltonian which leads to formulation of temperature and entropy of a horizon. These thermodynamic quantities are then used to establish an analogy between Einstein equation and Clausius equation. The obtained results are compared to those from classical General Relativity.

gr-qc↗