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Local Quantum Thermometry using Unruh-De Witt Detectors | | Sandra Robles
; Javier Rodriguez-Laguna
; | | Date: |
5 Sep 2016 | | Abstract: | We propose an operational definition for the local temperature of a quantum
field employing Unruh-DeWitt detectors, as used in the study of the Unruh and
Hawking effects. With this definition, an inhomogeneous quantum system in
equilibrium can have different local temperatures, in analogy with the
Tolman-Ehrenfest theorem from general relativity. We study the local
temperature distribution on the ground state of hopping fermionic systems on a
curved background, and conjecture a suitable extension: the product of the
local temperature and the logarithm of the local speed of light is
approximately constant. Our predictions should be testable on ultracold atomic
systems. | | Source: | arXiv, 1609.1154 | | Services: | Forum | Review | PDF | Favorites | |
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