Phys. Rev. E 62, 3262–3265 (2000)Spontaneous symmetry breaking in the finite lattice quantum sine-Gordon modelReceived 10 February 2000; published in the issue dated September 2000 The spontaneous breaking of a global discrete translational symmetry in the finite lattice quantum sine-Gordon model is demonstrated by a density matrix renormalization group. A phase diagram in the coupling constant-inverse system size plane is obtained. Comparison of the phase diagram with a Woomany-Wyld finite-size scaling leads to an identification of the Berezinskii-Kosterlitz-Thouless transition in the quantum sine-Gordon model as the spontaneous symmetry breaking. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.62.3262
DOI:
10.1103/PhysRevE.62.3262
PACS:
05.50.+q, 11.10.Lm, 11.30.Qc, 64.60.-i
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