Dual Instantons
A. Pinzul, A. Stern
Abstract
We show how to map the Belavin-Polyakov instantons of the O(3)-nonlinear σ-model to a dual theory where they then appear as nontopological solitons. They are stationary points of the Euclidean action in the dual theory, and moreover, the dual action and the O(3)-nonlinear σ-model action agree on shell.
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