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Kink Confinement and Supersymmetry

Mussardo, Giuseppe
2007
  • journal article

Periodico
JOURNAL OF HIGH ENERGY PHYSICS
Abstract
We analyze non-integrable deformations of two-dimensional N=1 supersymmetric quantum field theories with kink excitations. As example, we consider the multi-frequency Super Sine Gordon model. At weak coupling, this model is robust with respect to kink confinement phenomena, in contrast to the purely bosonic case. If we vary the coupling, the model presents a sequence of phase transitions, where pairs of kinks disappear from the spectrum. The phase transitions fall into two classes: the first presents the critical behaviors of the Tricritical Ising model, the second instead those of the gaussian model. In the first case, close to the critical point, the model has metastable vacua, with a spontaneously supersymmetry breaking. When the life-time of the metastable vacua is sufficiently long, the role of goldstino is given by the massless Majorana fermion of the Ising model. On the contrary, supersymmetry remains exact in the phase transition of the second type.
DOI
10.1088/1126-6708/2007/08/003
WOS
WOS:000249258200095
Archivio
http://hdl.handle.net/20.500.11767/16460
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77953240230
Diritti
open access
Scopus© citazioni
7
Data di acquisizione
Jun 7, 2022
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Web of Science© citazioni
8
Data di acquisizione
Mar 25, 2024
Visualizzazioni
5
Data di acquisizione
Apr 19, 2024
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