Iterated ϕ 4 kinks

Autor: N. S. Manton, K. Oleś, A. Wereszczyński
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-16 (2019)
Druh dokumentu: article
ISSN: 1029-8479
DOI: 10.1007/JHEP10(2019)086
Popis: Abstract A first order equation for a static ϕ 4 kink in the presence of an impurity is extended into an iterative scheme. At the first iteration, the solution is the standard kink, but at the second iteration the kink impurity generates a kink-antikink solution or a bump solution, depending on a constant of integration. The third iterate can be a kink-antikink-kink solution or a single kink modified by a variant of the kink’s shape mode. All equations are first order ODEs, so the nth iterate has n moduli, and it is proposed that the moduli space could be used to model the dynamics of n kinks and antikinks. Curiously, fixed points of the iteration are ϕ 6 kinks.
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