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A continuous transition between fractional quantum Hall and superfluid states by Barkeshli, Maissam; McGreevy, John is a scholarly article available to read on EtoBox.

What is A continuous transition between fractional quantum Hall and superfluid states about?

We develop a theory of a direct, continuous quantum phase transition between a bosonic Laughlin fractional quantum Hall (FQH) state and a superfluid, generalizing the Mott insulator to superfluid phase diagram of bosons to allow for the breaking of time-reversal symmetry. The direct transition can be protected by a spatial symmetry, and the critical theory is a pair of Dirac fermion fields coupled to an emergent Chern-Simons gauge field. The transition may be achieved in optical traps of ultracold atoms by starting with a $\nu = 1/2$ bosonic Laughlin state and tuning an appropriate periodic potential to change the topology of the composite fermion band structure.

Author

Barkeshli, Maissam; McGreevy, John

Published

2012

Language

EN