Phys. Rev. Lett. 64, 2206–2209 (1990)Electrodynamical properties of gapless edge excitations in the fractional quantum Hall statesReceived 8 January 1990; published in the issue dated 30 April 1990 The electrodynamical properties of the edge excitations in the fractional quantum Hall (FQH) states are studied. We show how to experimentally measure the (optical) charges of the edge excitations. The interactions between the edge excitations are studied. We also discuss in detail the edge excitations of the ν=1±1/n FQH states. Measuring the dynamical properties of the edge excitations is a practical way to probe the topological orders in the FQH states. © 1990 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.64.2206
DOI:
10.1103/PhysRevLett.64.2206
PACS:
73.20.Dx, 72.15.Gd, 73.50.Jt
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