Duality Invariance of the Hawking Temperature and Entropy

TL;DR

This paper demonstrates that in low energy string theory solutions with horizons and spacelike symmetry, the dual solutions preserve the Hawking temperature and entropy, indicating a form of duality invariance.

Contribution

It establishes that dual solutions in string theory maintain the same Hawking temperature and entropy, revealing a duality invariance of these thermodynamic properties.

Findings

Dual solutions share identical Hawking temperature.

Dual solutions have the same horizon entropy.

Duality preserves thermodynamic properties of black hole solutions.

Abstract

We consider solutions to low energy string theory which have a horizon and a spacelike symmetry. Each of these solutions has a geometrically different dual description. We show that the dual solution has a horizon with exactly the same Hawking temperature (surface gravity) and entropy (area) as the original solution.