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Exactly Solved Models and Beyond: a special issue in honour of R J Baxter's 75th birthday
Murray T Batchelor, Vladimir V Bazhanov, Vladimir V Mangazeev
This is an introduction to Exactly Solved Models and Beyond, a special issue collection of articles published in J. Phys. A in honour of R J Baxter's 75th birthday.
Vacuum energy of the Bukhvostov-Lipatov model
Vladimir V. Bazhanov, Sergei L. Lukyanov, Boris A. Runov
Bukhvostov and Lipatov have shown that weakly interacting instantons and anti-instantons in the non-linear sigma model in two dimensions are described by an exactly soluble…
Quasi-classical expansion of the star-triangle relation and integrable systems on quad-graphs
Vladimir V. Bazhanov, Andrew P. Kels, Sergey M Sergeev
In this paper we give an overview of exactly solved edge-interaction models, where the spins are placed on sites of a planar lattice and interact through edges connecting the sites…