Analogue model of a FRW universe in Bose-Einstein condensates: Application of the classical field method

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dc.creatorJain, Piyush
dc.creatorWeinfurtner, Silke
dc.creatorVisser, Matt
dc.creatorGardiner, C. W.
dc.date2007-05-15
dc.date.accessioned2026-07-07T08:32:44Z
dc.date.available2026-07-07T08:32:44Z
dc.descriptionAnalogue models of gravity have been motivated by the possibility of investigating phenomena not readily accessible in their cosmological counterparts. In this paper, we investigate the analogue of cosmological particle creation in a Friedmann-Robertson-Walker universe by numerically simulating a Bose-Einstein condensate with a time-dependent scattering length. In particular, we focus on a two-dimensional homogeneous condensate using the classical field method via the truncated Wigner approximation. We show that for various forms of the scaling function the particle production is consistent with the underlying theory in the long wavelength limit. In this context, we further discuss the implications of modified dispersion relations that arise from the microscopic theory of a weakly interacting Bose gas.
dc.description26 pages, 8 figures
dc.identifierhttps://arxiv.org/abs/0705.2077
dc.identifierhttp://arxiv.org/abs/0705.2077
dc.identifierPhys. Rev. A 76, 033616 (2007)
dc.identifierdoi:10.1103/PhysRevA.76.033616
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/138889
dc.subjectOther Condensed Matter
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleAnalogue model of a FRW universe in Bose-Einstein condensates: Application of the classical field method
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