Spin-statistics relation for quantum Hall states

Nardin, Alberto; Ardonne, Eddy; Mazza, Leonardo

doi:10.1103/PhysRevB.108.L041105

Spin-statistics relation for quantum Hall states

Nov 14, 2022

11 pages

Published in:

Phys.Rev.B 108 (2023) 4, L041105

Published: Jul 15, 2023

e-Print:

2211.07788 [cond-mat.mes-hall]

DOI:

10.1103/PhysRevB.108.L041105 (publication)

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Abstract: (APS)

We prove a generic spin-statistics relation for the fractional quasiparticles that appear in Abelian quantum Hall states on the disk. The proof is based on an efficient way for computing the Berry phase acquired by a generic quasiparticle translated in the plane along a circular path, and on the crucial fact that once the gauge-invariant generator of rotations is projected onto a Landau level, it fractionalizes among the quasiparticles and the edge. Using these results we define a measurable quasiparticle fractional spin that satisfies the spin-statistics relation. As an application, we predict the value of the spin of the composite-fermion quasielectron proposed by Jain; our numerical simulations agree with that value. We also show that Laughlin's quasielectrons satisfy the spin-statistics relation, but carry the wrong spin to be the antianyons of Laughlin's quasiholes. We continue by highlighting the fact that the statistical angle between two quasiparticles can be obtained by measuring the angular momentum while merging the two quasiparticles. Finally, we show that our arguments carry over to the non-Abelian case by discussing explicitly the Moore-Read wave function.

Note:

7 + 11 pages, 4 + 6 figures. Significant improvement with respect to the original version: A non-Abelian (Moore-Read) state is discussed

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Figures(9)

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