NONANALYTIC CONTRIBUTIONS TO THE SELF-ENERGY AND THE THERMODYNAMICS OF 2-DIMENSIONAL FERMI LIQUIDS

被引：49

作者：

COFFEY, D ^{[1
]}

BEDELL, KS ^{[1
]}

机构：

[1] LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.71.1043

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate the entropy of a two-dimensional Fermi liquid using a model with a contact interaction between fermions. We find that there are T2 contributions to the entropy from interactions separate from those due to the collective modes. These T2 contributions arise from nonanalytic corrections to the real part of the self-energy which may be calculated from the leading-log dependence of the imaginary part of the self-energy through the Kramers-Kronig relation. We find no evidence of a breakdown in Fermi liquid theory in 2D and conclude that Ferrmi liquids in 2D are similar to 3D Fermi liquids.

引用

页码：1043 / 1046

页数：4

共 22 条

[1] SINGULAR FORWARD SCATTERING IN THE 2D HUBBARD-MODEL AND A RENORMALIZED BETHE ANSATZ GROUND-STATE [J].