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

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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/900313
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