Random Phase Approximation and Extensions Applied to a Bosonic Field Theory

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dc.creatorHansen, H.
dc.creatorChanfray, G.
dc.creatorDavesne, D.
dc.creatorSchuck, P.
dc.date2002-01-30
dc.date2002-09-19
dc.date.accessioned2026-07-07T03:46:25Z
dc.date.available2026-07-07T03:46:25Z
dc.descriptionAn application of a self-consistent version of RPA to quantum field theory with broken symmetry is presented. Although our approach can be applied to any bosonic field theory, we specifically study the $ϕ^4$ theory in 1+1 dimensions. We show that standard RPA approach leads to an instability which can be removed when going to a superior version,i.e. the renormalized RPA. We present a method based on the so-called charging formula of the many electron problem to calculate the correlation energy and the RPA effective potential.
dc.description30 pages, LaTeX file, 10 figures included, final version accepted in EPJA
dc.identifierhttps://arxiv.org/abs/hep-ph/0201279
dc.identifierhttp://arxiv.org/abs/hep-ph/0201279
dc.identifierEur.Phys.J. A14 (2002) 397-411
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/41280
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleRandom Phase Approximation and Extensions Applied to a Bosonic Field Theory
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