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dc.contributor.authorSIMAS, Fabiano de Carvalho-
dc.contributor.authorGOMES, Adalto R.-
dc.contributor.authorNOBREGA, K. N.-
dc.date.accessioned2018-03-09T19:49:12Z-
dc.date.available2018-03-09T19:49:12Z-
dc.date.issued2017-
dc.identifier.citationSIMAS, F. C.; GOMES, A. R.; NOBREGA, K. Z. Degenerate vacua to vacuumless model and kink–antikink collisions. Physics Letters B, v. 775, p. 290-296, 2017. DOI: https://doi.org/10.1016/j.physletb.2017.11.013pt_br
dc.identifier.issn0370-2693-
dc.identifier.urihttp://hdl.handle.net/123456789/859-
dc.descriptionCC BYpt_br
dc.description.abstractIn this work we investigate a Z2 symmetric model of one scalar field ϕ in (1,1) dimension. The model is characterized by a continuous transition from a potential V(ϕ) with two vacua to the vacuumless case. The model has kink and antikink solutions that minimize energy. Stability analysis is described by a Schrödinger-like equation with a potential that transits from a volcano-shape with no vibrational states (in the case of vacuumless limit) to a smooth valley with one vibrational state. We are interested in the structure of two-bounce windows present in kink–antikink scattering processes. The standard mechanism of Campbell–Schonfeld–Wingate (CSW) requires the presence of one vibrational state for the occurrence of two-bounce windows. We report that the effect of increasing the separation of vacua from the potential V(ϕ) has the consequence of trading some of the first two-bounce windows predicted by the CSW mechanism by false two-bounce windows. Another consequence is the appearance of false two-bounce windows of zero-order.pt_br
dc.description.sponsorshipFAPEMA, CNPqpt_br
dc.language.isoenpt_br
dc.publisherElsevierpt_br
dc.titleDegenerate vacua to vacuumless model and kink–antikink collisionspt_br
dc.typeArticlept_br
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