Please use this identifier to cite or link to this item:
Title: Degenerate vacua to vacuumless model and kink–antikink collisions
Authors: SIMAS, Fabiano de Carvalho
GOMES, Adalto R.
Issue Date: 2017
Publisher: Elsevier
Citation: SIMAS, 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:
Abstract: In 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.
Description: CC BY
ISSN: 0370-2693
Appears in Collections:Artigos - Engenharia Agrícola

Files in This Item:
File Description SizeFormat 
Degenerate vacua to vacuumless model and kink–antikink collisions.pdfArtigo682,74 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.