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

Physics Letters B

M. Gleiser¹  R.A.C. Correa²  A. de Souza Dutra² 

[1] Center for Cosmic Origins and Department of Physics and Astronomy, Dartmouth College, Hanover, NH 03755, USA;UNESP – Campus de Guaratinguetá – DFQ, Av. Dr. Ariberto Pereira Cunha, 333 C.P. 205, 12516-410 Guaratinguetá, SP, Brazil;

关键词: Entropy;    Nonlinear;    Bloch walls;    Kinks;    Lumps;   

DOI  :  10.1016/j.physletb.2014.09.002

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown