Lorentzian wormholes generalizes thermodynamics still further

TL;DR

This paper explores the thermodynamics of Lorentzian wormholes, extending existing laws and proposing a novel phantom radiation emission with negative temperature, using a 2+2 formalism for spherically symmetric space-times.

Contribution

It introduces a generalized thermodynamic framework for Lorentzian wormholes, including new laws and the concept of phantom radiation emission at negative temperature.

Findings

Formulation of three main thermodynamic laws for wormholes

Proposal of phantom radiation emission with negative temperature

Extension of gravitational thermodynamics to wormhole spacetimes

Abstract

This paper deals with some thermodynamical aspects of Lorentzian wormholes, including the formulation of the three main laws and the consideration of a possible thermal emission made up of some sort of phantom radiation coming out from the wormhole at a negative temperature. In order for these topics to be consistently developed we have used a 2+2 formalism first advanced by Hayward for spherically symmetric space-times, where a generalized surface gravity is defined on the trapping horizon. Our results generalize still further those of the already generalized gravitational thermodynamics.