Two-dimensional Dirac fermions with random axial-vector potential
T. Fukui, H. Emura, H. Yamada
Abstract
A Dirac fermion model with random axial-vector potential is proposed. At a special strength of randomness, the symmetry of the action is enhanced, which is due to the gauge symmetry à la Nishimori. Some exact scaling exponents of single-particle Green functions are computed. The relationship with the XY gauge glass model is discussed.
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