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Phase transitions in Z_N gauge theory and twisted Z_N topological phases
Maissam Barkeshli, Xiao-Gang Wen
We find a series of non-Abelian topological phases that are separated from the deconfined phase of Z_N gauge theory by a continuous quantum phase transition. These non-Abelian stat…
Bilayer quantum Hall phase transitions and the orbifold non-Abelian fractional quantum Hall states
Maissam Barkeshli, Xiao-Gang Wen
We study continuous quantum phase transitions that can occur in bilayer fractional quantum Hall (FQH) systems as the interlayer tunneling and interlayer repulsion are tuned. We int…
Anyon Condensation and Continuous Topological Phase Transitions in Non-Abelian Fractional Quantum Hall States
Maissam Barkeshli, Xiao-Gang Wen
We find a series of possible continuous quantum phase transitions between fractional quantum Hall (FQH) states at the same filling fraction in two-component quantum Hall systems. T…
Correlated Topological Insulators and the Fractional Magnetoelectric Effect
Brian Swingle, Maissam Barkeshli, John McGreevy +1
Topological insulators are characterized by the presence of gapless surface modes protected by time-reversal symmetry. In three space dimensions the magnetoelectric response is des…