- 97-652 Vieri Mastropietro
- Small denominators and
anomalous behaviour
in the uncommensurate Hubbard-Holstein model
(234K, TeX)
Dec 29, 97
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Abstract. A small denominator problem arising in the perturbative expansion
for the Schwinger functions
of a quantum model of interacting
fermions in one dimension is solved by renormalization group techniques.
We show that the Schwinger functions asymptotic behaviour is anomalous and described
in terms of critical indices.
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