Abstract
We study the metal-insulator transition in the highly correlated electron gas, described by the Hubbard Hamiltonian, within a renormalization group approach. The scaling theory of critical phenomena and results associated with the existence of a zero-temperature fixed point are used to derive expressions for the susceptibility and specific heat at very low temperatures. We discuss the enhancement of these quantities in the Fermi liquid due to the proximity of the transition to an insulating state. Finally we compare our results with those expected for the case of a magnetic instability.
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