Exact conserved quantities on the cylinder II: Off-critical case

Davide Fioravanti, Marco Rossi

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


With the aim of exploring a massive family of models, the nonlinear integral equation for a quantum system consisting of left and right KdV equations coupled on the cylinder is derived from an integrable lattice field theory. The eigenvalues of the energy and of the transfer matrix (and of all the other local integrals of motion) are expressed in terms of the corresponding solutions of the nonlinear integral equation. The family of models turns out to correspond to the F(1,3) perturbation of Conformal Field Theories. The analytic and asymptotic behaviours of the transfer matrix are studied and given. © SISSA/ISAS 2003.

Original languageEnglish
Pages (from-to)995-1008
Number of pages14
JournalJournal of High Energy Physics
Issue number8
Publication statusPublished - 1 Aug 2003


  • Bethe Ansatz
  • Conformal and W Symmetry
  • Integrable Field Theories


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