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Tuning the quantumness of simple Bose systems and the evolution of the phase diagram

ORAL

Abstract

By means of first-principle Quantum Monte Carlo simulations, we study systems of Bose particles interacting via the Lennard-Jones interaction, which constitute a broad class of condensed matter systems that ranges from crystals to normal fluids to superfluids and gases. The interplay between particle interactions on the one hand, and quantum indistinguishability and delocalization on the other, is characterized by a single quantumness parameter. We show how the topology of the phase diagram evolves from the familiar case of He-4 as the dynamics of the particles become more (and less) quantum. We compare our predictions with available results from mean-field theory, and we discuss possible experimental realizations of the phases and physical regimes predicted here, including hypothetical muonic matter.

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Presenters

  • Youssef Kora

    Department of Physics, University of Alberta

Authors

  • Youssef Kora

    Department of Physics, University of Alberta

  • Massimo Boninsegni

    Physics, University of of Alberta, Department of Physics, University of Alberta, Physics, University of Alberta

  • Dam Thanh Son

    Kadanoff Center for Theoretical Physics, University of Chicago, University of Chicago, Physics, Univeristy of Chicago

  • Shiwei Zhang

    Center for Computational Quantum Physics, Simons foundation, Flatiron institute, Center for Computational Quantum Physics, Flatiron Institute; William & Mary, Center of Computational Quantum Physics, Flatiron Institute, New York City, USA, Center for Computational Quantum Physics, Flatiron Institute, Center for Computational Quantum Physics, Flatiron Institute, 162 5th Avenue, New York, NY 10010, Simons Foundation, Center for Computational Quantum Physics