Constraint effective potential of the magnetization in the quantum XY model

U. Gerber, C. P. Hofmann, F. J. Jiang, G. Palma, P. Stebler, U. J. Wiese

研究成果: 雜誌貢獻文章

12 引文 斯高帕斯(Scopus)

摘要

Using an improved estimator in the loop-cluster algorithm, we investigate the constraint effective potential of the magnetization in the spin 1\2 quantum XY model. The numerical results are in excellent agreement with the predictions of the corresponding low-energy effective field theory. After its lowenergy parameters have been determined with better than per mille precision, the effective theory makes accurate predictions for the constraint effective potential which are in excellent agreement with the Monte Carlo data. This shows that the effective theory indeed describes the physics in the low-energy regime quantitatively correctly.

原文英語
文章編號P06002
期刊Journal of Statistical Mechanics: Theory and Experiment
2011
發行號6
DOIs
出版狀態已發佈 - 2011 六月 1

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Statistics, Probability and Uncertainty

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