Thermodynamics of Fateev's models in the Presence of External Fields

Details Thermodynamics of Fateev's models in the Presence of External Fields Thermodynamics of Fateev's models in the Presence of External Fields

1999-10-04

arxiv.org/abs/hep-th/9910026v4

Nucl.Phys. B572 (2000) 609-625

Physics

High Energy Physics

High Energy Physics - Theory

To appear in Nucl.Phys.B

Scientific paper

10.1016/S0550-3213(00)00042-0

We study the Thermodynamic Bethe Ansatz equations for a one-parameter quantum field theory recently introduced by V.A.Fateev. The presence of chemical potentials produces a kink condensate that modifies the excitation spectrum. For some combinations of the chemical potentials an additional gapless mode appears. Various energy scales emerge in the problem. An effective field theory, describing the low energy excitations, is also introduced.

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