CROSSOVER EXPONENT FOR A WEAK MAGNETIC-FIELD AT THE LOCALIZATION ORTHOGONAL FIXED-POINT

被引：9

作者：

BIAFORE, M ^{[1
]}

CASTELLANI, C ^{[1
]}

KOTLIAR, G ^{[1
]}

机构：

[1] RUTGERS STATE UNIV,DEPT PHYS,PISCATAWAY,NJ 08854

来源：

NUCLEAR PHYSICS B | 1990年 / 340卷 / 2-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0550-3213(90)90461-L

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We re-examine the non-linear σ-model lagrangian for the soft modes of non-interacting electrons in a disordered system in a weak magnetic field, close to two dimensions. The magnetic field is shown to induce two scaling terms in the low-energy lagrangian. The crossover exponents are computed by using a Wilson-Polyakov non-linear renormalization group. The largest one agrees to lowest order with the exponent expected from naive scaling arguments. © 1990.

引用

页码：617 / 632

页数：16

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