APS -APS March Meeting 2017 - Event - Quantum Phase transition from $u = 1$ Fermionic Integer Quantum Hall phase to $u = 1/4$ Bosonic Fractional Quantum Hall phase through Feshbach Resonance

摘要

We investigate the quantum phase transition with one species of fermions in $u = 1$ fermionic integer quantum Hall phase to $u = frac{1}{4}$ bosonic fractional quantum Hall phase by introducing a p-wave pairing interaction among fermions through Feshbach resonance. Previous theoretical work studying this phase transition through Chern-Simons-Landau-Ginzburg theory showed that this phase transition can be of second order in the (2 + 1)D Ising universality class. Through exact diagonalization method, we demonstrated that it is indeed a second order phase transition.