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

Correa, R. A. C.; de Souza Dutra, A.; Gleiser, M.

doi:10.1016/j.physletb.2014.09.002

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

Journal Article · Wed Oct 01 00:00:00 EDT 2014 · Physics Letters B

DOI:https://doi.org/10.1016/j.physletb.2014.09.002· OSTI ID:1209728

Correa, R. A. C.; de Souza Dutra, A.;

Here, 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.

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