تقرير
Quantum Monte Carlo and perturbative study of two-dimensional Bose-Fermi mixtures
| العنوان: | Quantum Monte Carlo and perturbative study of two-dimensional Bose-Fermi mixtures |
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| المؤلفون: | D'Alberto, Jacopo, Cardarelli, Lorenzo, Galli, Davide Emilio, Bertaina, Gianluca, Pieri, Pierbiagio |
| المصدر: | Phys. Rev. A 109, 053302 (2024) |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Quantum Gases |
| الوصف: | We derive analytically the leading beyond-mean field contributions to the zero-temperature equation of state and to the fermionic quasi-particle residue and effective mass of a dilute Bose-Fermi mixture in two dimensions. In the repulsive case, we perform quantum Monte Carlo simulations for two representative bosonic concentrations and equal masses, extending a method for correcting finite-size effects in fermionic gases to Bose-Fermi mixtures. We find good agreement between analytic expressions and numerical results for weak interactions, while significant discrepancies appear in the regime close to mechanical instability, above which we provide evidence of phase separation of the bosonic component. Comment: 16 pages, 9 figures. Added appendix and changed title |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevA.109.053302 |
| URL الوصول: | http://arxiv.org/abs/2402.13664 |
| رقم الأكسشن: | edsarx.2402.13664 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevA.109.053302 |
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