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EnglishWe 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).
Quantum Monte Carlo study of a resonant Bose-Fermi mixture / Bertaina, G; Fratini, E; Giorgini, S; Pieri, P. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 110:11(2013), p. 115303. [10.1103/PhysRevLett.110.115303]
| Titolo: | Quantum Monte Carlo study of a resonant Bose-Fermi mixture | |
| Autori: | ||
| Data di pubblicazione: | 2013 | |
| Abstract: | We study a resonant Bose-Fermi mixture at zero temperature by using the fixed-node diffusion Mont...e 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). | |
| Rivista: | PHYSICAL REVIEW LETTERS | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevLett.110.115303 | |
| Full-text (pubblici): | restricted | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/11696/60851
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