Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2002-07-22
Physics
Condensed Matter
Strongly Correlated Electrons
Completely revised and expanded version. Includes scaling analisis for more general systems away from the "pSO(5)" condition 7
Scientific paper
10.1103/PhysRevB.68.245111
We study the scaling properties of the quantum ``projected'' SO(5) model in three dimensions by means of a highly accurate Quantum-Monte-Carlo analysis. Within the parameter regime studied (temperature and system size), we show that the scaling behavior is consistent with a SO(5)-symmetric critical behavior in a relative extendent transient regime. This holds both when the symmetry breaking is caused by quantum fluctuations only as well as when also the static (mean-field) symmetry is moderately broken. We argue that possible departure away from the SO(5)-symmetric scaling occurs only in an extremely narrow parameter regime, which is inaccessible both experimentally and numerically.
Arrigoni Enrico
Dorneich A.
Hanke Werner
Jöstingmeier M.
Zhang Shou-Cheng
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