Monte Carlo study of U(1) lattice gauge Higgs model of high-Tc superconductivity
Yasuko Munehisa, Tetsuo Matsui
DOI 10.1103/PhysRevB.43.11388 · Physical Review B
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Abstract
Using Monte Carlo simulations, we study the thermodynamics of a two-dimensional U(1) lattice gauge theory with Higgs scalar, which is derived from the t-J model of electron as its Ginzburg-Landau theory. The U(1) gauge variables describe resonating valence bonds of spins, while the Higgs scalar represents the phase degrees of freedom of doped holes. Radial components of gauge variables are treated dynamically. We find a peak in the specific heat, which may be a precursor of a genuine superconducting phase transition that one would obtain when a weak three dimensionality is included.
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