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Leading Temperature Corrections to Fermi Liquid Theory in Two Dimensions

Gennady Y. Chitov·Andrew J. Millis
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Abstract

We calculate the basic parameters of the Fermi Liquid: the scattering vertex, the Landau interaction function, the effective mass, and physical susceptibilities for a model of two-dimensional (2D) fermions with a short ranged interaction at non-zero temperature. The leading temperature dependences of the spin components of the scattering vertex, the Landau function, and the spin susceptibility are found to be linear. T-linear terms in the effective mass and in the ``charge-sector''- quantities are found to cancel to second order in the interaction, but the cancellation is argued not to be generic. The connection with previous studies of the 2D Fermi-Liquid parameters is discussed.

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Gennady Y. Chitov, Andrew J. Millis. 2001-01-26. Leading Temperature Corrections to Fermi Liquid Theory in Two Dimensions. https://doi.org/10.1103/physrevlett.86.5337

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