Deuretzbacher, F.; Becker, D.; Bjerlin, J.; Reimann, S.M.; Santos, L.: Spin-chain model for strongly interacting one-dimensional Bose-Fermi mixtures. In: Physical Review A 95 (2017), Nr. 4, No. 43630. DOI: https://doi.org/10.1103/PhysRevA.95.043630
Abstract: | |
Strongly interacting one-dimensional (1D) Bose-Fermi mixtures form a tunable XXZ spin chain. Within the spin-chain model developed here, all properties of these systems can be calculated from states representing the ordering of the bosons and fermions within the atom chain and from the ground-state wave function of spinless noninteracting fermions. We validate the model by means of an exact diagonalization of the full few-body Hamiltonian in the strongly interacting regime. Using the model, we explore the phase diagram of the atom chain as a function of the boson-boson (BB) and boson-fermion (BF) interaction strengths and calculate the densities, momentum distributions, and trap-level occupancies for up to 17 particles. In particular, we find antiferromagnetic (AFM) and ferromagnetic (FM) order and a demixing of the bosons and fermions in certain interaction regimes. We find, however, no demixing for equally strong BB and BF interactions, in agreement with earlier calculations that combined the Bethe ansatz with a local-density approximation. © 2017 American Physical Society. | |
License of this version: | Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. |
Document Type: | Article |
Publishing status: | publishedVersion |
Issue Date: | 2017 |
Appears in Collections: | Fakultät für Mathematik und Physik |
pos. | country | downloads | ||
---|---|---|---|---|
total | perc. | |||
1 | Germany | 71 | 62.28% | |
2 | United States | 23 | 20.18% | |
3 | China | 8 | 7.02% | |
4 | Ireland | 3 | 2.63% | |
5 | France | 2 | 1.75% | |
6 | Vietnam | 1 | 0.88% | |
7 | Taiwan | 1 | 0.88% | |
8 | Sweden | 1 | 0.88% | |
9 | Europe | 1 | 0.88% | |
10 | Czech Republic | 1 | 0.88% | |
other countries | 2 | 1.75% |
Hinweis
Zur Erhebung der Downloadstatistiken kommen entsprechend dem „COUNTER Code of Practice for e-Resources“ international anerkannte Regeln und Normen zur Anwendung. COUNTER ist eine internationale Non-Profit-Organisation, in der Bibliotheksverbände, Datenbankanbieter und Verlage gemeinsam an Standards zur Erhebung, Speicherung und Verarbeitung von Nutzungsdaten elektronischer Ressourcen arbeiten, welche so Objektivität und Vergleichbarkeit gewährleisten sollen. Es werden hierbei ausschließlich Zugriffe auf die entsprechenden Volltexte ausgewertet, keine Aufrufe der Website an sich.