Critical properties of the quantum Ashkin-Teller chain with chiral perturbations

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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 atom experiments are briefly discussed.

Original languageEnglish
Article number184425
Number of pages7
JournalPhysical Review B
Issue number18
Publication statusPublished - 2023


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