This article is cited in 1 paper

Exact instanton-anti-instanton solutions and semiclassical expansion in the $\sigma$ model with fermions

R. G. Ismagilov


Abstract: The effective action obtained after exact integration with respect to the fermion fields is extremal on configurations that can be interpreted as instanton-anti-instanton solutions. The single-loop contribution of the obtained solutions to the functional integral is estimated.

Received: 17.09.1984

 English version: Theoretical and Mathematical Physics, 1985, 65:1, 1010–1016

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