Fractional spin for quantum Hall effect quasiparticles

T. Einarsson, S. L. Sondhi, S. M. Girvin, D. P. Arovas

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We investigate the issue of whether quasiparticles in the fractional quantum Hall effect possess a fractional intrinsic spin. The presence of such a spin S is suggested by the spin-statistics relation S = θ/2π, with θ being the statistical angle, and, on a sphere, is required for consistent quantization of one or more quasiparticles. By performing Berry-phase calculations for quasiparticles on a sphere we find that there are two terms, of different origin, that couple to the curvature and can be interpreted as parts of the quasiparticle spin. One, due to self-interaction, has the same value for both the quasihole and quasielectron, and fulfills the spin-statistics relation. The other is a kinematical effect and has opposite signs for the quasihole and quasielectron. The total spin thus agrees with a generalized spin-statistics theorem 1 2 (Sqh + Sqe) = θ/2π. On the plane, we do not find any corresponding terms.

Original languageEnglish (US)
Pages (from-to)515-529
Number of pages15
JournalNuclear Physics, Section B
Issue number3
StatePublished - May 15 1995

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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