Observer dependence for the phonon content of the sound field living on the effective curved space-time background of a Bose-Einstein condensate

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dc.creatorFedichev, Petr O.
dc.creatorFischer, Uwe R.
dc.date2003-07-09
dc.date2004-03-31
dc.date.accessioned2026-07-07T02:52:15Z
dc.date.available2026-07-07T02:52:15Z
dc.descriptionWe demonstrate that the ambiguity of the particle content for quantum fields in a generally curved space-time can be experimentally investigated in an ultracold gas of atoms forming a Bose-Einstein condensate. We explicitly evaluate the response of a suitable condensed matter detector, an ``Atomic Quantum Dot,'' which can be tuned to measure time intervals associated to different effective acoustic space-times. It is found that the detector response related to laboratory, ``adiabatic,'' and de Sitter time intervals is finite in time and nonstationary, vanishing, and thermal, respectively.
dc.description9 pages, 2 figures; references updated, as published in Physical Review D
dc.identifierhttps://arxiv.org/abs/cond-mat/0307200
dc.identifierhttp://arxiv.org/abs/cond-mat/0307200
dc.identifierPhys.Rev. D69 (2004) 064021
dc.identifierdoi:10.1103/PhysRevD.69.064021
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21773
dc.subjectOther Condensed Matter
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleObserver dependence for the phonon content of the sound field living on the effective curved space-time background of a Bose-Einstein condensate
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