Thermodynamic Phase Diagram of Two-Dimensional Bosons in a Quasicrystal Potential

Zhaoxuan Zhu, Hepeng Yao, and Laurent Sanchez-Palencia
Phys. Rev. Lett. 130, 220402 – Published 31 May 2023

Abstract

Quantum simulation of quasicrystals in synthetic bosonic matter now paves the way for the exploration of these intriguing systems in wide parameter ranges. Yet thermal fluctuations in such systems compete with quantum coherence and significantly affect the zero-temperature quantum phases. Here we determine the thermodynamic phase diagram of interacting bosons in a two-dimensional, homogeneous quasicrystal potential. We find our results using quantum Monte Carlo simulations. Finite-size effects are carefully taken into account and the quantum phases are systematically distinguished from thermal phases. In particular, we demonstrate stabilization of a genuine Bose glass phase against the normal fluid in sizable parameter ranges. We interpret our results for strong interactions using a fermionization picture and discuss experimental relevance.

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  • Received 27 October 2022
  • Accepted 10 May 2023

DOI:https://doi.org/10.1103/PhysRevLett.130.220402

© 2023 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalCondensed Matter, Materials & Applied Physics

Authors & Affiliations

Zhaoxuan Zhu1, Hepeng Yao2, and Laurent Sanchez-Palencia1

  • 1CPHT, CNRS, Ecole Polytechnique, IP Paris, F-91128 Palaiseau, France
  • 2Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland

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Issue

Vol. 130, Iss. 22 — 2 June 2023

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