Information-entropic measure of energy-degenerate kinks in two-field models
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Undergraduate course
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Elsevier B.V.
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Article
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Acesso aberto
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Abstract
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.
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Keywords
Entropy, Nonlinear, Bloch walls, Kinks, Lumps
Language
English
Citation
Physics Letters B. Amsterdam: Elsevier Science Bv, v. 737, p. 388-394, 2014.
