Non-Fermi Liquid Behavior of Electrons in the 2D Honeycomb Lattice: A Renormalization Group Analysis
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The theory of the Fermi liquid and the perturbations of it that lead to te BCS and charge density wave instabilities have recently been rephrased as effective field theories[1,2,3] to which renormalization group techniques can be applied. The main objection to this approach, as has been emphasized by Anderson in this conference, is the deep difference existing between the simple single point vacuum of the quantum field theory and the complicated many-body vacuum.
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