Thermodynamics and the Unruh effect
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2020-04-13
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Universidade Federal de Goiás
Resumo
A uniformly accelerated detector perceives the Minkowski vacuum as a thermal state. In
particular, for a massless scalar field, one cannot distinguish these two scenarios -accelerated
detector in the vacuum and an inertial detector in contact with a thermal reservoir- just by
using a point-like detector. In this work we show that one can probe the existence of
acceleration by using an extended detector with dimension perpendicular to the acceleration
direction. Also, we verify that the internal degrees of freedom of the detector may get
entangled by a process of spontaneous emission, and as such is dependent on the initial state
of the detector. It is found that the entropy production and entropy fluxes from out the
detector also allow one to tell the two scenarios apart: more internal entangled detectors
produce less entropy and vice-versa; the wavelength of the sought particle is the critical
length at which the behavior of the two system is inverted.
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BORGES, L. A. O. Thermodynamics and the Unruh effect. 2020. 90 f. Dissertação (Mestrado em Fisica) - Universidade Federal de Goiás, Goiânia, 2020.