Strict site-occupation constraint in 2d Heisenberg models and dynamical mass generation in $QE{D}_3$ at finite temperature

Abstract

We study the effect of site occupation in 2d quantum spin systems at finite temperature in a $\pi$-flux state description at the mean-field level. We impose each lattice site to be occupied by a single SU(2) spin. This is realized by means of a specific prescription. We consider the low-energy Hamiltonian which is mapped into a $QE{D}_3$ Lagrangian of spinons. We compare the dynamically generated mass to the one obtained by means of an average site occupation constraint.

9 pages and 4 figures

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Cited by in corpus (9)

• Compact quantum electrodynamics in 2+1 dimensions and spinon deconfinement: a renormalization group analysis
• Kekule-distortion-induced Exciton instability in graphene
• Deconfinement criticality for the spatially anisotropic triangular antiferromagnet with the ring exchange
• Chiral symmetry restoration in (2+1)-dimensional $QED$ with a Maxwell-Chern-Simons term at finite temperature
• Deconfined criticality for the S=1 spin model on the spatially anisotropic triangular lattice
• Neel-VBS phase boundary of the extended J_1-J_2 model with biquadratic interaction
• Effects of a strict site-occupation constraint in the description of quantum spin systems at finite temperature
• Interacting potential between spinons in the compact QED3 description of the Heisenberg model
• Fluctuation Effect in the π-flux State for Undoped High-Temperature Superconductors