Stability of the quantum spin Hall effect: Effects of interactions, disorder, and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="double-struck">Z</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>topology
The stability to interactions and disorder of the quantum spin Hall effect\n(QSHE) proposed for time-reversal-invariant 2D systems is discussed. The QSHE\nrequires an energy gap...