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Sat, 04 Mar 2000 00:00:00 +0200Sat, 04 Mar 2000 00:00:00 +0200Dilute Instanton Gas of an O(3)Skyrme Model
https://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/901
The pure-Skyrme limit of a scale-breaking Skyrmed O(3) sigma model in 1+1 dimensions is employed to study the effect of the Skyrme term on the semiclassical analysis of a field theory with instantons. The instantons of this model are self-dual and can be evaluated explicitly. They are also localised to an absolute scale, and their fluctuation action can be reduced to a scalar subsystem. This permits the explicit calculation of the fluctuation determinant and the shift in vacuum energy due to instantons. The model also illustrates the semiclassical quantisation of a Skyrmed field theory.H. J. W. MÃ¼ller-Kirsten; S.-N. Tamariana; D.H. Tchrakian; Frank Zimmerschiedpreprinthttps://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/901Mon, 03 Apr 2000 00:00:00 +0200