Quantum backreaction in dilute Bose-Einstein condensates

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dc.creatorSchützhold, Ralf
dc.creatorUhlmann, Michael
dc.creatorXu, Yan
dc.creatorFischer, Uwe R.
dc.date2005-03-23
dc.date2005-11-03
dc.date.accessioned2026-07-07T11:29:49Z
dc.date.available2026-07-07T11:29:49Z
dc.descriptionFor many physical systems which can be approximated by a classical background field plus small (linearized) quantum fluctuations, a fundamental question concerns the correct description of the backreaction of the quantum fluctuations onto the dynamics of the classical background. We investigate this problem for the example of dilute atomic/molecular Bose-Einstein condensates, for which the microscopic dynamical behavior is under control. It turns out that the effective-action technique does not yield the correct result in general and that the knowledge of the pseudo-energy-momentum tensor ${<\hat T_{μν}>}$ is not sufficient to describe quantum backreaction.
dc.description8 pages of RevTex4; extended discussion with additional sections, to be published in Physical Review D
dc.identifierhttps://arxiv.org/abs/cond-mat/0503581
dc.identifierhttp://arxiv.org/abs/cond-mat/0503581
dc.identifierPhys.Rev.D72:105005,2005
dc.identifierdoi:10.1103/PhysRevD.72.105005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196836
dc.subjectOther Condensed Matter
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.subjectQuantum Physics
dc.titleQuantum backreaction in dilute Bose-Einstein condensates
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