Geodesic
Expectation values of scaling fields in $Z_N$ Ising models
Teoretičeskaâ i matematičeskaâ fizika, Tome 154 (2008) no. 3, pp. 557-583 Cet article a éte moissonné depuis la source Math-Net.Ru

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We compute exact vacuum expectation values of physically relevant scaling fields in the perturbed $Z_N$ parafermionic models. Our algebraic method is based on analyzing vertex operators in the corresponding off-critical lattice model. The results coincide with the expressions derived by perturbed conformal field theory methods.
Keywords: integrable model, conformal field theory, vacuum expectation value, parafermionic symmetry, vertex operator. 
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V. A. Fateev; Ya. P. Pugay. Expectation values of scaling fields in $Z_N$ Ising models. Teoretičeskaâ i matematičeskaâ fizika, Tome 154 (2008) no. 3, pp. 557-583. http://geodesic.mathdoc.fr/item/TMF_2008_154_3_a8/

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