Journal
PHYSICAL REVIEW LETTERS
Volume 86, Issue 20, Pages 4628-4631Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.4628
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A microscopic theory of current partition in fractional quantum Hall liquids, described by chiral Luttinger liquids, is developed to compute the noise correlations, using the Keldysh technique. In this Hanbury-Brown and Twiss geometry, at Laughlin filling factors upsilon = 1/3, the real time noise correlator exhibits oscillations which persist over larger time scales than that of an uncorrelated Halt fluid. The zero frequency noise correlations are negative at filling factor 1/3 as for bare electrons (antibunching), but are strongly reduced in amplitude. These correlations become positive (bunching) for upsilon less than or equal to 1/5, suggesting a tendency towards bosonic behavior.
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