Quasiparticle Behavior of Composite Fermions in the Half-Filled Landau Level

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.314· OSTI ID:439065

Kopietz, P ^[1]; Castilla, G E ^[2]

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1. Institut fuer Theoretische Physik der Universitaet Goettingen, Bunsenstrasse 9, D-37073 Goettingen (Germany)
2. Department of Physics, University of California at Riverside, Riverside, California 92521 (United States)

We calculate the effect of infrared fluctuations of the Chern-Simons gauge field on the single-particle Green{close_quote}s function of composite fermions in the half-filled Landau level via higher-dimensional bosonization on a curved Fermi surface. We find that composite fermions remain well-defined quasiparticles, with an effective mass given by the mean-field value, but with anomalously large damping and a spectral function that contains considerable weight away from the quasiparticle peak. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Brookhaven National Laboratory
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 439065
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 2 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
EFFECTIVE MASS
ENERGY LEVELS
FERMI LEVEL
FERMIONS
FLUCTUATIONS
GAUGE INVARIANCE
GREEN FUNCTION
HALL EFFECT
QUASI PARTICLES