Hawking Temperature of Dilaton Black Holes from Tunneling

TL;DR

This paper calculates the Hawking temperature of various dilaton black holes using tunnelling methods, confirming the effectiveness of semi-classical approaches in black hole thermodynamics.

Contribution

It applies null-geodesic and Hamilton-Jacobi tunnelling methods to diverse dilaton black holes, extending previous techniques to new black hole solutions.

Findings

Hawking temperatures derived match known results

Methods successfully applied to static and rotating black holes

Demonstrates tunnelling approach's versatility in black hole thermodynamics

Abstract

Recently, it has been suggested that Hawking radiation can be derived from quantum tunnelling methods. In this letter, we calculated Hawking temperature of dilatonic black holes from tunnelling formalism. The two semi-classical methods adopted here are: the null-geodesic method proposed by Parikh and Wilczek and the Hamilton-Jacobi method propsed by Angheben et al. We apply the two methods to anylysis the Hawking temperature of the static spherical symmetric dilatonic black hole, the rotating Kaluza-Klein black hole, and the rotating Kerr-Sen black hole.