Kavli Affiliate: Natalia Chepiga
| First 5 Authors: Bernhard Lüscher, Frédéric Mila, Natalia Chepiga, ,
| Summary:
We investigate the nature of the phase transitions in the quantum
Ashkin-Teller chain in the presence of chiral perturbations. We locate the
Lifshitz line separating a region of direct chiral transitions from the region
where the transition is through an intermediate floating phase. Furthermore, we
identify a small region in the vicinity of the four-state Potts point where
chiral perturbations are irrelevant and where the transition remains conformal.
Implications to Rydberg atoms experiments are briefly discussed.
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