Numerical studies of the Pfaffian model of the nu=5/2 fractional quantum Hall effect
arXiv:0707.0586 · doi:10.1016/j.ssc.2007.03.061
Abstract
The Pfaffian model has been proposed for the fractional quantum Hall effect (FQHE) at nu=5/2. We examine it for the quasihole excitations by comparison with exact diagonalization results. Specifically, we consider the structure of the low-energy spectrum, accuracy of the microscopic wave functions, particle-hole symmetry, splitting of the degeneracies, and off-diagonal long range order. We also review how the 5/2 FQHE can be understood without appealing to the Pfaffian model. Implications for nonabelian braiding statistics will be mentioned.
one column removed from Table II. Solid State Communications, in press