Simplified derivation of the Hawking-Unruh temperature for an accelerated observer in vacuum
Abstract
A detector undergoing uniform acceleration
a
in a vacuum field responds just as though it were immersed in thermal radiation of temperature
T=ℏa/2πkc
. A simple, intuitive derivation of this result is given for the case of a scalar field in one spatial dimension. The approach is then extended to treat the case where the field seen by the accelerated observer is a spin-1/2 Dirac field.