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arXiv · 2308.07144

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

Bernhard Lüscher·Frédéric Mila·Natalia Chepiga
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Abstract

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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Bernhard Lüscher, Frédéric Mila, Natalia Chepiga. 2023-08-14. Critical properties of the quantum Ashkin-Teller chain with chiral perturbations. https://doi.org/10.1103/physrevb.108.184425

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