Information-entropic measure of energy-degenerate kinks in two-field models

• Autor(a) principal: Correa, R. A. C. [UNESP]
• Data de Publicação: 2014
• Outros Autores: Souza Dutra, A. de [UNESP], Gleiser, M.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1016/j.physletb.2014.09.002; http://hdl.handle.net/11449/116702
• topic: Entropy; Nonlinear; Bloch walls; Kinks; Lumps

We investigate the existence and properties of kink-like solitons in a class of models with two interacting scalar fields. In particular, we focus on models that display both double and single-kink solutions, treatable analytically using the Bogomol'nyi-Prasad-Sommerfield bound (BPS). Such models are of interest in applications that include Skyrmions and various superstring-motivated theories. Exploring a region of parameter space where the energy for very different spatially-bound configurations is degenerate, we show that a newly-proposed momentum-space entropic measure called Configurational Entropy (CE) can distinguish between such energy-degenerate spatial profiles. This information-theoretic measure of spatial complexity provides a complementary perspective to situations where strictly energy-based arguments are inconclusive. (C) 2014 The Authors. Published by Elsevier B.V.