dc.contributorScuola Int Super Studi Avanzati
dc.contributorIst Nazl Fis Nucl
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:08:13Z
dc.date.accessioned2022-10-05T15:03:26Z
dc.date.available2014-05-20T14:08:13Z
dc.date.available2022-10-05T15:03:26Z
dc.date.created2014-05-20T14:08:13Z
dc.date.issued2004-05-31
dc.identifierNuclear Physics B. Amsterdam: Elsevier B.V., v. 687, n. 3, p. 189-219, 2004.
dc.identifier0550-3213
dc.identifierhttp://hdl.handle.net/11449/23936
dc.identifier10.1016/j.nuclphysb.2004.04.003
dc.identifierWOS:000221564600001
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3897161
dc.description.abstractWe present new theoretical results on the spectrum of the quantum field theory of the double sine-Gordon model. This non-integrable model displays different varieties of kink excitations and bound states thereof. Their mass can be obtained by using a semiclassical expression of the matrix elements of the local fields. In certain regions of the coupling-constants space the semiclassical method provides a picture which is complementary to the one of the form factor perturbation theory, since the two techniques give information about the mass of different types of excitations. In other regions the two methods are comparable, since they describe the same kind of particles. Furthermore, the semiclassical picture is particularly suited to describe the phenomenon of false vacuum decay, and it also accounts in a natural way the presence of resonance states and the occurrence of a phase transition. (C) 2004 Elsevier B.V. All rights reserved.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationNuclear Physics B
dc.relation3.285
dc.relation1,744
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectnon-integrable quantum field theories
dc.subjectform factors
dc.subjectbound states
dc.titleSemiclassical particle spectrum of double sine-Gordon model
dc.typeArtigo


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