Statistics of skyrmions in Quantum Hall systems

Details Statistics of skyrmions in Quantum Hall systems Statistics of skyrmions in Quantum Hall systems

1995-12-11

arxiv.org/abs/cond-mat/9512077v2

Physics

Condensed Matter

6 pages in Latex. addendum - skyrmions with odd or even number of reversed spins have different quantum statistics. They conde

Scientific paper

10.1103/PhysRevB.53.12973

We analyze statistical interactions of skyrmions in the quantum Hall system near a critical filling fraction in the framework of the Ginzburg-Landau model. The phase picked up by the wave-function during an exchange of two skyrmions close to $\nu=1/(2n+1)$ is $\pi[S+1/2(2n+1)]$, where $S$ is the skyrmion's spin. In the same setting an exchange of two fully polarized vortices gives rise to the phase $\pi/(2n+1)$. Skyrmions with odd and even numbers of reversed spins have different quantum statistics. Condensation of skyrmions with an even number of reversed spins leads to filling fractions with odd denominators, while condensation of those with an odd number of reversed spins gives rise to filling fractions with even denominators.

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