Lorentz covariance and the crossover of two-dimensional antiferromagnets
作者： P. R. Crompton
DOI: 10.1103/PHYSREVB.75.174520
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摘要: We derive a lattice $\beta$-function for the 2d-Antiferromagnetic Heisenberg model, which allows interaction couplings of nonperturbative Quantum Monte Carlo vacuum to be related directly zero-temperature fixed points nonlinear sigma model in presence strong interplanar and spin anisotropies. In addition usual renormalization gapful disordered state vicinity quantum critical point, we show that this leads chiral doubling spectra excited states.
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