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Winding vacuum energies in a deformed O(4) sigma model

Bazhanov, Vladimir; Kotousov, Gleb; Lukyanov, Sergei L


We consider the problem of calculating the Casimir energies in the winding sectors of Fateev's SS-model, which is an integrable two-parameter deformation of the O(4) non-linear sigma model in two dimensions. This problem lies beyond the scope of all traditional methods of integrable quantum field theory including the thermodynamic Bethe ansatz and non-linear integral equations. Here we propose a solution based on a remarkable correspondence between classical and quantum integrable systems and...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
Source: Nuclear Physics B
DOI: 10.1016/j.nuclphysb.2014.11.005
Access Rights: Open Access


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