Coherent and squeezed condensates in massless $λφ^4$ theory

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dc.creatorPavel, H. -P.
dc.creatorBlaschke, D.
dc.creatorRoepke, G.
dc.creatorPervushin, V. N.
dc.date1995-12-23
dc.date.accessioned2026-07-07T04:21:46Z
dc.date.available2026-07-07T04:21:46Z
dc.descriptionGeneralizing the Bogoliubov model of a weakly non-ideal Bose gas to massless $λφ^4$ theory we show that spontaneous breaking of symmetry occurs due to condensation in a coherent vacuum % which is energetically favoured compared to the perturbative one. and leads to a vacuum energy density which is lower than that obtained by Coleman and Weinberg using the one-loop effective potential method. We discuss the alternative of a squeezed condensate and find that for the massless $λφ^4$ theory spontaneous symmetry breaking to a squeezed vacuum does not occur.
dc.description13 pages, Latex
dc.identifierhttps://arxiv.org/abs/hep-th/9512193
dc.identifierhttp://arxiv.org/abs/hep-th/9512193
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/54458
dc.subjectHigh Energy Physics - Theory
dc.titleCoherent and squeezed condensates in massless $λφ^4$ theory
dc.typetext

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