Quantum Criticality in the 2D Quasiperiodic Potts Model

Utkarsh Agrawal, Sarang Gopalakrishnan, Romain Vasseur

Research output: Contribution to journalArticlepeer-review

Abstract

Quantum critical points in quasiperiodic magnets can realize new universality classes, with critical properties distinct from those of clean or disordered systems. Here, we study quantum phase transitions separating ferromagnetic and paramagnetic phases in the quasiperiodic q-state Potts model in 2+1D. Using a controlled real-space renormalization group approach, we find that the critical behavior is largely independent of q, and is controlled by an infinite-quasiperiodicity fixed point. The correlation length exponent is found to be ν=1, saturating a modified version of the Harris-Luck criterion.

Original languageEnglish (US)
Article number265702
JournalPhysical review letters
Volume125
Issue number26
DOIs
StatePublished - Dec 23 2020

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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