English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We calculate using perturbative calculations and Ward identities the basicparameters of the Fermi Liquid: the scattering vertex, the Landau interactionfunction, the effective mass, specific heat, and physical susceptibilities fora model of two-dimensional (2D) fermions with a short ranged interaction atnon-zero temperature. The leading temperature dependence of the spin componentsof the scattering vertex, the Landau function, and the spin susceptibility isfound to be linear. We find that the standard T=0 relationships for aGalilean-invariant Fermi Liquid are violated by finite-temperature terms. Thecoefficients in the temperature corrections to these relationships involve asubtle interplay between contributions from small and large ($\sim 2k_F$)momentum processes. A connection with previous studies of the 2D Fermi-Liquidparameters is discussed. We conclude that the linear leading temperaturedependence of the parameters is a generic feature of the 2D Fermi Liquid.Comment: 23 pages, 1 fugur

First temperature corrections to the Fermi-liquid fixed point in two dimensions