# Null Surface Thermodynamics

@inproceedings{Adami2021NullST, title={Null Surface Thermodynamics}, author={H. Adami and M. M. Sheikh-Jabbari and V. Taghiloo and Hossein Yavartanoo}, year={2021} }

We establish that boundary degrees of freedom associated with a generic co-dimension one null surface in D dimensional pure Einstein gravity naturally admit a thermodynamical description. The null surface thermodynamics which we expect to universally hold is a result of the diffeomorphism invariance of the theory and do not rely on other special features of the null surface. Using standard surface charge analysis and covariant phase space method, we formulate laws of null surface thermodynamics…

## 4 Citations

Thermal nature of a generic null surface

- PhysicsPhysical Review D
- 2021

Dynamical properties of a generic null surface are known to have a thermodynamic interpretation. Such an interpretation is completely based on an analogy between the usual law of thermodynamics and…

Null boundary phase space: slicings, news & memory

- PhysicsJournal of High Energy Physics
- 2021

Abstract
We construct the boundary phase space in D-dimensional Einstein gravity with a generic given co-dimension one null surface $$ \mathcal{N} $$
N
as the boundary. The associated boundary…

Boundary Heisenberg Algebras and Their Deformations

- Physics, Mathematics
- 2021

We investigate the deformations and rigidity of boundary Heisenberg-like algebras. In particular, we focus on the Heisenberg and Heisenberg⊕witt algebras which arise as symmetry algebras in…

Near horizon gravitational charges

- Physics
- 2022

In this paper, we study the near horizon symmetry and gravitational charges in the Newman-Penrose formalism. In particular we investigate the effect from topological terms. We find that the…

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