Systems of integral equations are proposed which generalise those previously encountered in connection with the so-called staircase models. Under the assumption that these equations describe the finite-size effects of relatistic field theories via the thermodynamic Bethe ansatz, analytical and numerical evidence is given for the existence of a variety of new roaming renormalisation group trajectories. For each positive integer k and s = 0,...,k - 1, there is a one-parameter family of trajectories, passing close by the coset conformal field theories G(k) × G(nk+s)/G((n+1)(k+s) before finally flowing to a massive theory for s = 0, or to another coset model for s ≠ 0. © 1993.
Generalising the staircase models / Dorey P.; Ravanini F.. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - STAMPA. - 406:3(1993), pp. 708-726. [10.1016/0550-3213(93)90007-C]
Generalising the staircase models
Ravanini F.
1993
Abstract
Systems of integral equations are proposed which generalise those previously encountered in connection with the so-called staircase models. Under the assumption that these equations describe the finite-size effects of relatistic field theories via the thermodynamic Bethe ansatz, analytical and numerical evidence is given for the existence of a variety of new roaming renormalisation group trajectories. For each positive integer k and s = 0,...,k - 1, there is a one-parameter family of trajectories, passing close by the coset conformal field theories G(k) × G(nk+s)/G((n+1)(k+s) before finally flowing to a massive theory for s = 0, or to another coset model for s ≠ 0. © 1993.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
