Finite time measurements by Unruh-DeWitt detector and Landauer's principle
Quantum Physics
2017-06-06 v2 High Energy Physics - Theory
Abstract
The model of Unruh-DeWitt detector coupled to the scalar field for finite time is studied. A systematic way of computing finite time corrections in various cases is suggested and nonperturbative effects like thermalization are discussed. It is shown in particular that adiabatic switching off the coupling between the detector and the thermal bath leaves non-vanishing corrections to the detector's levels distribution. Considering the two level detector as an information bearing degree of freedom encoding one bit of information, limits on external work for the detector's (de)couling in finite time following from the Landauer's bound are formulated.
Keywords
Cite
@article{arxiv.1607.07071,
title = {Finite time measurements by Unruh-DeWitt detector and Landauer's principle},
author = {V. Shevchenko},
journal= {arXiv preprint arXiv:1607.07071},
year = {2017}
}
Comments
43 pages, no figures. Many minor improvements, refs added