Deuretzbacher, F.; Bruun, G.M.; Pethick, C.J.; Jona-Lasinio, M.; Reimann, S.M.; Santos, L.: Self-bound many-body states of quasi-one-dimensional dipolar Fermi gases: Exploiting Bose-Fermi mappings for generalized contact interactions. In: Physical Review A - Atomic, Molecular, and Optical Physics 88 (2013), Nr. 3, No. 33611. DOI:
https://doi.org/10.1103/PhysRevA.88.033611
Zusammenfassung: |
Using a combination of results from exact mappings and from mean-field theory we explore the phase diagram of quasi-one-dimensional systems of identical fermions with attractive dipolar interactions. We demonstrate that at low density these systems provide a realization of a single-component one-dimensional Fermi gas with a generalized contact interaction. Using an exact duality between one-dimensional Fermi and Bose gases, we show that when the dipole moment is strong enough, bound many-body states exist, and we calculate the critical coupling strength for the emergence of these states. At higher densities, the Hartree-Fock approximation is accurate, and by combining the two approaches we determine the structure of the phase diagram. The many-body bound states should be accessible in future experiments with ultracold polar molecules. © 2013 American Physical Society.
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Lizenzbestimmungen: |
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Publikationstyp: |
Article |
Publikationsstatus: |
publishedVersion |
Erstveröffentlichung: |
2013 |
Schlagwörter (englisch): |
Bose-Fermi mapping, Contact interaction, Critical coupling, Dipolar interaction, Hartree-Fock approximations, One-dimensional Fermi gas, Quasi-one-dimensional, Quasi-one-dimensional systems, Electron gas, Mean field theory, Phase diagrams, Fermions
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Fachliche Zuordnung (DDC): |
530 | Physik
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