134 research outputs found
The Haldane bosonisation scheme and metallic states of interacting fermions in d spatial dimensions
We consider the Haldane bosonisation scheme in d spatial dimensions as
applied to a realistic model of interacting fermions in d=2 and unequivocally
demonstrate failure of this scheme in d > 1, specifically in d=2. In addition
to tracing back this failure to its origin, we show that {\sl nothing} as
regards the true metallic state of the model under consideration is known with
any degree of certainty.Comment: 20 pages, no figure
Dynamical correlation functions expressed in terms of many-particle ground-state wavefunction; the dynamical self-energy operator
We present the explicit expressions for the (regularized) terms in the
large-epsilon asymptotic series of in particular the self-energy operator
pertaining to arbitrary systems of interacting spin-s fermions in d spatial
dimensions and deduce a variety of exact results concerning the general
properties of this operator. We give especial attention to systems of spin-1/2
fermions in d=3 interacting through the Coulomb potential. [Short Abstract]Comment: 119 pages, 6 postscript figures. Brought the text in conformity with
the published version, and corrected the coefficients of A'(0) and A_s'(0) in
appendix
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