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Quantum Criticality in the 2D Quasiperiodic Potts Model

Journal Article · · Physical Review Letters
 [1];  [2];  [3]
  1. Univ. of Massachusetts, Amherst, MA (United States); UMass Amherst
  2. City Univ. of New York, NY (United States)
  3. Univ. of Massachusetts, Amherst, MA (United States)
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. In conclusion, the correlation length exponent is found to be ν = 1, saturating a modified version of the Harris-Luck criterion.
Research Organization:
Univ. of Massachusetts, Amherst, MA (United States)
Sponsoring Organization:
National Science Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0019168
OSTI ID:
1749843
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 26 Vol. 125; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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