Phasediagram and Scaling Properties of the Projected SO(5) Model in Three Dimensions
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 the numerically accessible region. 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.
KeywordsInelastic Neutron Scattering Ultrasoft Pseudopotentials Calculated Lattice Constant 1This Work Linearize Augment Plane Wave Method
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