1996/11/29 by P. Prelovšek, Peter Prelovsek · 15 citations
Physics and Astronomy · #Asymmetry #Decoupling (probability) #Electron #Equations of motion #Physics of Superconductivity and Magnetism #Planar #Quantum Chromodynamics and Particle Interactions #Quantum and electron transport phenomena #Quasiparticle #cond-mat.str-el #t-J model
paper · pdf · doi:10.1007/s002570050389
published in Zeitschrift für Physik B Condensed Matter 103(3), 363-368 (Springer Nature) · 7 pages RevTeX, 4 Postscript figures attached. Submitted to Z. Phys., Festschrift issue dedicated to Prof. W. Gotze on the occasion of his 60th birthday
arxiv created 1996/11/29 · openalex publication_date 1997/04/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The electron Green's functions G(\bf k,ω) within the t-J model and in the regime of intermediate doping is studied analytically using equations of motion for projected fermionic operators and the decoupling of the self energy into the single-particle and spin fluctuations. It is shown that the assumption of marginal spin dynamics at T=0 leads to an anomalous quasiparticle damping. Numerical result show also a pronounced asymmetry between the hole (ω<0) and the electron (ω>0) part of the spectral function, whereby hole-like quasiparticles are generally overdamped.