Quantum Monte Carlo Study of a Resonant Bose-Fermi Mixture
Anno: 2013
Autori: Bertaina G., Fratini E., Giorgini S., Pieri P.
Affiliazione autori: Institute of Theoretical Physics, Ecole Polytechnique F�d�rale de Lausanne EPFL, CH-1015 Lausanne, Switzerland; School of Science and Technology, Physics Division, University of Camerino and CNISM, I-62032 Camerino, Italy; INO-CNR BEC Center and Dipartimento di Fisica, Universit� di Trento, 38123 Povo, Italy; INFN, Sezione di Perugia, Perugia, Italy
Abstract: We study a resonant Bose-Fermi mixture at zero temperature by using the fixed-node diffusion Monte Carlo method. We explore the system from weak to strong boson-fermion interaction, for different concentrations of the bosons relative to the fermion component. We focus on the case where the boson density n(B) is smaller than the fermion density n(F), for which a first-order quantum phase transition is found from a state with condensed bosons immersed in a Fermi sea, to a Fermi-Fermi mixture of composite fermions and unpaired fermions. We obtain the equation of state and the phase diagram, and we find that the region of phase separation shrinks to zero for vanishing n(B). DOI: 10.1103/PhysRevLett.110.115303
Giornale/Rivista: PHYSICAL REVIEW LETTERS
Volume: 110 (11) Da Pagina: 115303-1 A: 115303-5
Maggiori informazioni: We thank V. Savona for many helpful discussions and constant support throughout this project. P. P. acknowledges financial support from EPFL academic visitor program.
Parole chiavi: Ground-state; Solid He-4; Gas; Molecules
DOI: 10.1103/PhysRevLett.110.115303
Citazioni: 38
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-06-01
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