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cond-mat.stat-mech2019
Self-dual -invariant quantum chains
Edward O'Brien, Paul Fendley
We investigate the self-dual three-state quantum chain with nearest-neighbor interactions and , time-reversal, and parity symmetries. We find a rich phase diagram including ga…
cond-mat.stat-mech2019
The "not-A", RSPT and Potts phases in an -invariant chain
Edward O'Brien, Eric Vernier, Paul Fendley
We analyse in depth an -invariant nearest-neighbor quantum chain in the region of a U(1)-invariant self-dual multicritical point. We find four distinct proximate gapped phases…