Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-10-04
JHEP 1002:008,2010
Physics
High Energy Physics
High Energy Physics - Theory
41 pages, 27 figures. v2: minor revision
Scientific paper
10.1007/JHEP02(2010)008
We write the thermodynamic Bethe ansatz for the massive OSp(2|2) Gross Neveu and sigma models. We find evidence that the GN S matrix proposed by Bassi and Leclair [12] is the correct one. We determine features of the sigma model S matrix, which seem highly unconventional; we conjecture in particular a relation between this sigma model and the complex sine-Gordon model at a particular value of the coupling. We uncover an intriguing duality between the OSp(2|2) GN (resp. sigma) model on the one hand, and the SO(4) sigma (resp. GN model) on the other, somewhat generalizing to the massive case recent results on OSp(4|2). Finally, we write the TBA for the (SUSY version of the) flow into the random bond Ising model proposed by Cabra et al. [39], and conclude that their S matrix cannot be correct.
Pozsgay Balazs
Saleur Herbert
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