Exact conformal-field-theory results on the multichannel Kondo effect: Single-fermion Green's function, self-energy, and resistivity

Journal Article · Wed Sep 01 00:00:00 EDT 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.48.7297· OSTI ID:6213916

Affleck, I ^[1]; Ludwig, A W.W. ^[2]

---

1. Canadian Institute for Advanced Research and Physics Department, University of British Columbia, Vancouver, British Columbia, V6T1Z1 (Canada)
2. Physics Department, University of British Columbia, Vancouver, British Columbia, V6T1Z1 (Canada) Joseph Henry Laboratories of Physics, Physics Department, Princeton University, Princeton, New Jersey 08544 (United States)

A conformal-field-theory approach has recently been developed for quantum-impurity problems including the overscreened'' multichannel Kondo model. We present the details of our calculation of the single-fermion Green's function. The universal zero-temperature resistivity and leading temperature-dependent term are derived. Effects of particle-hole symmetry breaking are included. We also give our perturbative proof of the [ital g] theorem'' governing the change in residual entropy under a renormalization-group flow between two boundary fixed points.

• OSTI ID: 6213916
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 48:10; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
KONDO EFFECT
ANALYTICAL SOLUTION
CONFORMAL INVARIANCE
ELECTRIC CONDUCTIVITY
FERMIONS
GREEN FUNCTION
SELF-ENERGY
SYMMETRY BREAKING
TEMPERATURE DEPENDENCE
ELECTRICAL PROPERTIES
ENERGY
FUNCTIONS
INVARIANCE PRINCIPLES
PHYSICAL PROPERTIES
665400* - Quantum Physics Aspects of Condensed Matter- (1992-)