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Quantum Monte Carlo study of the indirect Pauli exclusion effect in Bose-Fermi mixtures

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Abstract

We study the momentum distributions of a three-dimensional resonant Bose-Fermi mixture in the molecular limit at zero temperature. For concentration of the bosons with respect to the fermions less or equal to one, each boson is bound to a fermion and the system is composed of fermionic molecules plus excess fermions. Not only the bosonic condensate fraction goes to zero, signaling a quantum phase transition towards a normal phase, but a finite region of low momenta is depleted, depending on the concentration. This phenomenon is named indirect Pauli exclusion effect and is demonstrated via Fixed-Node Diffusion Monte Carlo simulations and T-matrix calculations.

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Authors and Affiliations

  1. Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, 20133, Milano, Italy

    G. Bertaina

  2. School of Science and Technology, Physics Division, University of Camerino, via Madonna delle Carceri 9, 62032, Camerino, Italy

    A. Guidini & P. Pieri

Authors
  1. G. Bertaina
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  2. A. Guidini
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  3. P. Pieri
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Correspondence to G. Bertaina.

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Bertaina, G., Guidini, A. & Pieri, P. Quantum Monte Carlo study of the indirect Pauli exclusion effect in Bose-Fermi mixtures. Eur. Phys. J. Spec. Top. 224, 497–501 (2015). https://doi.org/10.1140/epjst/e2015-02379-9

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  • DOI: https://doi.org/10.1140/epjst/e2015-02379-9

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