Laughlin Wave Function and One-Dimensional Free Fermions

Details Laughlin Wave Function and One-Dimensional Free Fermions Laughlin Wave Function and One-Dimensional Free Fermions

1995-09-07

arxiv.org/abs/cond-mat/9509039v1

Phys.Rev.B52:13742-13744,1995

Physics

Condensed Matter

7 pages, Latex , no figures

Scientific paper

10.1103/PhysRevB.52.13742

Making use of the well-known phase space reduction in the lowest Landau level(LLL), we show that the Laughlin wave function for the $\nu = {1\over m}$ case can be obtained exactly as a coherent state representation of an one dimensional $(1D)$ wave function. The $1D$ system consists of $m$ copies of free fermions associated with each of the $N$ electrons, confined in a common harmonic well potential. Interestingly, the condition for this exact correspondence is found to incorporate Jain's parton picture. We argue that, this correspondence between the free fermions and quantum Hall effect is due to the mapping of the $1D$ system under consideration, to the Gaussian unitary ensemble in the random matrix theory.

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