Phasediagram and Scaling Properties of the Projected SO(5) Model in Three Dimensions

Martin Jöstingmeier (), Ansgar Dorneich, Enrico Arrigoni (), Werner Hanke and Shou-Cheng Zhang ()
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Martin Jöstingmeier: University of Würzburg, Institute for Theoretical Physics and Astrophysics
Ansgar Dorneich: University of Würzburg, Institute for Theoretical Physics and Astrophysics
Enrico Arrigoni: Technical University of Graz, Institute for Theoretical Physics
Werner Hanke: University of Würzburg, Institute for Theoretical Physics and Astrophysics
Shou-Cheng Zhang: Stanford University, Department of Physics

A chapter in High Performance Computing in Science and Engineering, Munich 2004, 2005, pp 289-300 from Springer

Abstract: Abstract 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.

Keywords: Inelastic Neutron Scattering; Ultrasoft Pseudopotentials; Calculated Lattice Constant; 1This Work; Linearize Augment Plane Wave Method (search for similar items in EconPapers)
Date: 2005
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DOI: 10.1007/3-540-26657-7_26

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