Can wormholes have negative temperatures?

TL;DR

This paper explores the thermodynamic properties of Morris-Thorne wormholes, revealing their embedding in higher-dimensional space and proposing the novel idea of negative temperature due to exotic matter.

Contribution

It demonstrates the embedding of wormholes in higher-dimensional space and introduces the concept of negative temperature from exotic matter effects.

Findings

Wormholes are embedded in (5+2) Minkowski space.

Entropy and Hawking temperature are constructed using Unruh effects.

Negative temperature may originate from exotic matter distribution.

Abstract

We study (3+1) Morris-Thorne wormhole to investigate its higher dimensional embedding structures and thermodynamic properties. It is shown that the wormhole is embedded in (5+2) global embedding Minkowski space. This embedding enables us to construct the wormhole entropy and Hawking temperature by exploiting Unruh effects. We also propose a possibility of negative temperature originated from exotic matter distribution of the wormhole.