# Black hole thermodynamics: general relativity and beyond

@article{Sarkar2019BlackHT, title={Black hole thermodynamics: general relativity and beyond}, author={Sudipta Sarkar}, journal={General Relativity and Gravitation}, year={2019}, volume={51}, pages={1-28} }

Black holes have often provided profound insights into the nature of gravity and the structure of space–time. The study of the mathematical properties of black objects is a major research theme of contemporary theoretical physics. This review presents a comprehensive survey of the various versions of the first law and second law of black hole mechanics in general relativity and beyond. The emphasis is to understand how these laws can constrain the physics beyond general relativity.

## 15 Citations

### Black hole zeroth law in higher curvature gravity

- Physics
- 2020

The zeroth law of black hole mechanics is an assertion of constancy of the surface gravity on a stationary Killing horizon. The Hawking temperature of the black hole horizon is proportional to the…

### An entropy current for dynamical black holes in four-derivative theories of gravity

- PhysicsJournal of High Energy Physics
- 2020

We propose an entropy current for dynamical black holes in a theory with arbitrary four derivative corrections to Einstein’s gravity, linearized around a stationary black hole. The…

### Signature of nonuniform area quantization on gravitational waves

- PhysicsPhysical Review D
- 2021

Quantum aspects of black holes may have observational imprints on their absorption and emission spectrum. In this work, we consider the possibility of non-uniform area quantization and its effects on…

### An entropy current and the second law in higher derivative theories of gravity

- PhysicsJournal of High Energy Physics
- 2021

We construct a proof of the second law of thermodynamics in an arbitrary diffeomorphism invariant theory of gravity working within the approximation of linearized dynamical fluctuations around…

### Non-perturbative correction to the Hořava-Lifshitz black hole thermodynamics

- PhysicsChinese Journal of Physics
- 2022

### Kinematics and dynamics of null hypersurfaces in the Einstein-Cartan spacetime and related thermodynamic interpretation

- Mathematics, PhysicsPhysical Review D
- 2022

: A general geometric construction of a generic null hypersurface in presence of torsion in the spacetime (Riemann-Cartan background), generated by a null vector l a , is being developed here. We…

### Entropy increases at linear order in scalar-hairy Lovelock gravity

- Computer ScienceJournal of High Energy Physics
- 2020

This paper investigates the second law of the black holes in Lovelock gravity sourced by a conformally coupled scalar field under the first-order approximation when the perturbation matter fields satisfy the null energy condition and shows that this law obeys a linearized second law.

### Entropy increases at linear order in scalar-hairy Lovelock gravity

- Computer ScienceJournal of High Energy Physics
- 2020

This paper investigates the second law of the black holes in Lovelock gravity sourced by a conformally coupled scalar field under the first-order approximation when the perturbation matter fields satisfy the null energy condition and shows that this law obeys a linearized second law.

### Constraining the topological Gauss-Bonnet coupling from GW150914

- PhysicsPhysical Review D
- 2022

Recent gravitational wave observation based on the data from GW150914 has conﬁrmed Hawking’s area theorem and estimated the increase in total horizon area during a merger process of two Kerr black…

### Non-minimal coupling of scalar and gauge fields with gravity: an entropy current and linearized second law

- PhysicsJournal of High Energy Physics
- 2022

Abstract
This work extends the proof of a local version of the linearized second law involving an entropy current with non-negative divergence by including the arbitrary non-minimal coupling of…

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