Quantum structure of spacetime and blackhole entropy

TL;DR

This paper proposes a framework linking quantum spacetime theories to blackhole thermodynamics by modeling blackholes as excited states in nonlocal field theories with universal short-distance properties.

Contribution

It introduces a novel approach connecting microscopic quantum spacetime models with semiclassical blackhole physics through nonlocal field theories.

Findings

Blackhole thermodynamics derived from dispersion relations of elementary excitations.

Models involve fields smeared over Planck-scale regions.

Correlation functions exhibit universal short-distance behavior.

Abstract

The gap between a microscopic theory for quantum spacetime and the semiclassical physics of blackholes is bridged by treating the blackhole spacetimes as highly excited states of a class of nonlocal field theories. All the blackhole thermodynamics is shown to arise from asymptotic form of the dispersion relation satisfied by the elementary excitations of these field theories. These models involve, quite generically, fields which are: (i) smeared over regions of the order of Planck length and (ii) possess correlation functions which have universal short distance behaviour.