STABILITY AND SINGLE-PARTICLE PROPERTIES OF BOSONIZED FERMI LIQUIDS

Article

关键词: RENORMALIZATION-GROUP;    LANDAU-THEORY;    DIMENSIONS;    SURFACE;   

DOI  :  10.1103/PhysRevB.50.1351

来源: SCIE

【 摘 要 】

We study the stability and single-particle properties of Fermi liquids in spatial dimensions greater than one via bosonization. For smooth nonsingular Fermi-liquid interactions we obtain Shankar's renormalization-group flows to second order in the BCS coupling and reproduce well-known results for quasiparticle lifetimes. We demonstrate by explicit calculation that spin-charge separation does not occur when the Fermi-liquid interactions are regular. We also explore the relationship between quantized bosonic excitations and zero-sound modes and present a concise derivation of both the spin And the charge collective-mode equations. Finally we discuss some aspects of singular Fermi-liquid interactions.

【 授权许可】

Free