Modified finite-size scaling for anharmonic crystals with quantum fluctuations

E.S. Pisanova and N.S. Tonchev

Physica A: Statistical Mechanics and its Applications, 1996, vol. 227, issue 3, 325-333

Abstract: The modified finite-size scaling (for dimensions d ⩾ d>, where d> is the upper critical dimensionality) is verified in the closed vicinity of both the classical and the quantum multicritical points by the example of a quantum model for an anharmonic cyrstal, confined to a fully finite (block) geometry under periodic boundary conditions. Unified scaling equations corresponding to the two kinds of correlation lengths related with the fixed dimensionless temperature t when the quantum parameter λ is varied, and with fixed λ when t is varied, are obtained.

Keywords: Quantum fluctuations; Multicritical points; Modified finite-size scaling; Exactly solvable model (search for similar items in EconPapers)
Date: 1996
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:227:y:1996:i:3:p:325-333

DOI: 10.1016/0378-4371(95)00388-6

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