Paul Fendley and Jesper L Jacobsen 2008 J. Phys. A: Math. Theor. 41 215001 doi:10.1088/1751-8113/41/21/215001
Paul Fendley1,2 and Jesper L Jacobsen3,4
Show affiliationsWe show how to couple two critical Q-state Potts models to yield a new self-dual critical point. We also present strong evidence of a dense critical phase near this critical point when the Potts models are defined in their completely packed loop representations. In the continuum limit, the new critical point is described by an SU(2) coset conformal field theory, while in this limit of the critical phase, the two loop models decouple. Using a combination of exact results and numerics, we also obtain the phase diagram in the presence of vacancies. We generalize these results to coupling two Potts models at different Q.
05.50.+q Lattice theory and statistics (Ising, Potts, etc.)
11.25.Hf Conformal field theory, algebraic structures
11.30.Ly Other internal and higher symmetries
81T17 Renormalization group methods
82B30 Statistical thermodynamics (See also 80-XX)
82B28 Renormalization group methods (See also 81T17)
81T40 Two-dimensional field theories, conformal field theories, etc.
82B20 Lattice systems (Ising, dimer, Potts, etc.) and systems on graphs
Issue 21 (30 May 2008)
Received 19 March 2008
Published 6 May 2008
Paul Fendley and Jesper L Jacobsen 2008 J. Phys. A: Math. Theor. 41 215001
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