Ground-state properties of a one-dimensional strongly interacting Bose-Fermi mixture in a double-well potential

Znanstveni rad - Izvorni znanstveni rad

• Autor: Karlo Lelas
• Autor: Dario Jukić
• Autor: Hrvoje Buljan
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

We calculate the reduced single-particle density matrix (RSPDM), momentum distribution, natural orbitals and their occupancies, for a strongly repulsive one-dimensional Bose-Fermi mixture in a double-well potential with a large central barrier. We assume that all particles have the same mass, and fermions are spin polarized. For mesoscopic systems, we find that the ground-state properties qualitatively differ for mixtures with even number of particles (both odd-odd and even-even mixtures) in comparison to mixtures with odd particle numbers (odd-even and even-odd mixtures). For even mixtures the momentum distribution is smooth, whereas the momentum distribution of odd mixtures possesses distinct modulations; the differences are observed also in the off-diagonal correlations of the RSPDM, and in the occupancies of natural orbitals. The calculation is based on a formula which enables efficient calculation of the RSPDM for mesoscopic mixtures in various potentials.

• Ključne riječi (engleski): Bose-Fermi mixture; double-well potential; strongly correlated states
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Physical Review A
• Brojčani podaci: vol. 80, br. 5, 053617
• p-ISSN: 1050-2947
• DOI: https://doi.org/10.1103/PhysRevA.80.053617
• URN:NBN: urn:nbn:hr:217:321954
• Datum objave publikacije: 2009
• Projekt: Šifra: 119-0000000-1015; Naziv (hrvatski): Nelinearne pojave i valna dinamika u fotoničkim sustavima; Voditelj: Hrvoje Buljan; Pravna nadležnost: Hrvatska; Financijer: MZOS; Linija financiranja: ZP
• URL dokumenta: http://link.aps.org/doi/10.1103/PhysRevA.80.053617
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: Copyright (2009) by the American Physical Society. Received 27 July 2009; published 19 November 2009.
• Datum i vrijeme pohrane: 2019-10-28 15:58:25