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Can anyone kindly provide any information on valuable references or books on this topic? It appears to be prevalent in 90s papers on High-Tc superconductivity or quantum Hall effect, especially in a form of fermions interacting with U(1) gauge field.
I remember Fadeev having an excellent book on this, but when I search, I found Popov's book on this (which also looks good, but not what I remember). To formulate Fermions interacting with electromagnetism, just replace the derivative with the covariant derivative in the Schrodinger field.
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