Sigma model effective action for strong localization

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dc.creatorBabichenko, A.
dc.creatorBabichenko, V.
dc.date2008-12-04
dc.date.accessioned2026-07-07T12:09:24Z
dc.date.available2026-07-07T12:09:24Z
dc.descriptionBose gas in a random external field is considered. The sigma model like effective action both for weak and strong random fields compared with the interaction between particles is derived by averaging over the random field and integration over the quantum fluctuations in the framework of the Keldysh-Schwinger technique for irreversible processes. Using this effective action the properties of the system in strongly fluctuating random field are analyzed.
dc.description17 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/0812.0966
dc.identifierhttp://arxiv.org/abs/0812.0966
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/209615
dc.subjectDisordered Systems and Neural Networks
dc.titleSigma model effective action for strong localization
dc.typetext

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