"Emergent reflection symmetry from nonrelativistic composite fermions"

Prashant Kumar : Michael Mulligan and S. Raghu; Physical Review B, 05/28/19.

Additional Authors: Michael Mulligan and S. Raghu


A recent experimental study [Pan et al., arXiv:1902.10262] has shown that fractional quantum Hall effect gaps are essentially consistent with particle-hole symmetry in the lowest Landau level. Motivated by this result, we consider a clean two-dimensional electron system from the viewpoint of composite fermion mean-field theory. In this paper, we show that while the experiment is manifestly consistent with a Dirac composite fermion theory proposed recently by Son, it can equally well be explained within the framework of nonrelativistic composite fermions, first put forward by Halperin, Lee, and Read.