• Second order phase transition in two dimensional sine-Gordon field theory—Lattice model

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    • Keywords


      Sine-Gordon system; lattice formulation; variational techniques in field theory; phase transition; Simon-Griffiths theorem; spontaneous symmetry breaking

    • Abstract


      Two dimensional sine-Gordon (SG) field theory on a lattice is studied using the single-site basis variational method of Drell and others. The nature of the phase transition associated with the spontaneous symmetry breakdown in a SG field system is clarified to be of second order. A generalisation is offered for a SG-type field theory in two dimensions with a potential of the from [cosn(√λ/m)ϕ−1].

    • Author Affiliations


      K Babu Joseph1 V C Kuriakose1

      1. Department of Physics, Cochin University, Cochin - 682 022
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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