Expectation values of scaling fields in Z N Ising models
Abstract
We compute exact vacuum expectation values of physically relevant scaling fields in the perturbed ZN 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.
- Publication:
-
Theoretical and Mathematical Physics
- Pub Date:
- March 2008
- DOI:
- 10.1007/s11232-008-0039-2
- Bibcode:
- 2008TMP...154..473F
- Keywords:
-
- integrable model;
- conformal field theory;
- vacuum expectation value;
- parafermionic symmetry;
- vertex operator