Ward Identities for the Two-Coupled-Chains Model

Details Ward Identities for the Two-Coupled-Chains Model Ward Identities for the Two-Coupled-Chains Model

2011-03-14

arxiv.org/abs/1103.2744v1

Physics

Condensed Matter

Strongly Correlated Electrons

TeX file, 12 pages, 5 figures

Scientific paper

We derive exact Ward Identities in the Two-Coupled-Chains Model in the
presence of a momentum cutoff, with an extra correction term generated by the
breaking of local symmetries. Such term is non vanishing in 1-loop order in the
infinite bandwidth limit and this indicates the presence of a quantum anomaly.

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