Thermal aspects in curved metrics

2013/01/15 by Acquaviva, Giovanni
#FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc)

paper · doi:10.48550/arxiv.1301.3286

Abstract

In this paper we describe two approaches that allow to calculate some thermal features as perceived by different observers in curved spacetimes: the tunnelling method and the Unruh-DeWitt detector. The tunnelling phenomenon is a semi-classical approach to the issue of Hawking radiation and allows a straightforward calculation of the horizon temperature in a plethora of scenarios; the Unruh-DeWitt model relies instead on a quantum field-theoretical approach and (whenever possible) gives a more exact answer in terms of transition rates between energy levels of an idealized detector.

Related

• Tunnelling methods and Unruh-DeWitt detectors in curved spacetimes
• Unruh-DeWitt detector and the interpretation of the horizon temperature in spherically symmetric dynamical space-times
• Probing thermal effects on static spacetimes with Unruh-DeWitt detectors
• Hawking and Unruh radiation perception by different observers: applications of the effective temperature function (in Spanish)
• Quantized Temperatures Spectra in Curved Spacetimes