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Coherent states in the bilayer fractional quantum Hall ferromagnet

Authors
Journal
Physica B Condensed Matter
0921-4526
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/s0921-4526(98)00324-x
Keywords
  • Quantum Hall Effect
  • Excitons
  • Squeezed State
  • Coherent State
  • Double Layer Electron Systems
Disciplines
  • Physics

Abstract

Abstract We find that we can use a ‘squeezed-vacuum’ state conceived in quantum optics to give the ground-state wave function for the bilayer quantum Hall system at the total Landau-level filling of ν=1/ m ( m: odd integer). This is derived in the boson approximation, where a particle–hole pair creation across the symmetric–antisymmetric gap, Δ SAS, is regarded as a boson. The degree of squeezing is given as a function of the layer separation and Δ SAS.

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