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math-ph2016★ 1 cited
Decay of Superconducting Correlations for Gauged Electrons in Dimensions
Yasuhiro Tada, Tohru Koma
We study lattice superconductors coupled to gauge fields, such as an attractive Hubbard model in electromagnetic fields, with a standard gauge fixing. We prove upper bounds for a t…
math-ph2016★ 15 cited
Two No-Go Theorems on Superconductivity
Yasuhiro Tada, Tohru Koma
We study lattice superconductors such as attractive Hubbard models. As is well known, Bloch's theorem asserts absence of persistent current in ground states and equilibrium states…