Renormalization group study of the one dimensional quantum mechanical XY model

Bambi Hu

Physica A: Statistical Mechanics and its Applications, 1979, vol. 99, issue 1, 330-336

Abstract: The one dimensional quantum mechanical XY model is studied by the renormalization group method. To second order in the cumulant expansion, no non-trivial fixed points are found. The calculated free energy is in excellent agreement with that of the exact solution.

Date: 1979
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:99:y:1979:i:1:p:330-336

DOI: 10.1016/0378-4371(79)90139-0

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