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Spontaneous symmetry breaking in the finite, lattice quantum sine-Gordon model

S. G. Chung
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Abstract

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.

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BibTeXRIS

S. G. Chung. 2000-06-17. Spontaneous symmetry breaking in the finite, lattice quantum sine-Gordon model. https://doi.org/10.1103/physreve.62.3262

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