We study the quantum phases of a three-color Hubbard model that arises in the dynamics of the p-band orbitals of spinless fermions in an optical lattice. Strong, color-dependent interactions are induced by an optical Feshbach resonance. Starting from the microscopic scattering properties of ultracold atoms, we derive the orbital exchange constants at 1/3 filling on the cubic optical lattice. Using this, we compute the phase diagram in a Gutzwiller ansatz. We find phases with "axial orbital order" in which p z and px+ipy (or px-ipy) orbitals alternate. © 2011 American Physical Society.

Orbital order of spinless fermions near an optical Feshbach resonance / Hauke, Philipp; Zhao, Erhai; Goyal, Krittika; Deutsch, Ivan H.; Liu, W. Vincent; Lewenstein, Maciej. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - ELETTRONICO. - 84:5(2011), pp. 051603.1-051603.5. [10.1103/PhysRevA.84.051603]

Orbital order of spinless fermions near an optical Feshbach resonance

Hauke, Philipp;
2011-01-01

Abstract

We study the quantum phases of a three-color Hubbard model that arises in the dynamics of the p-band orbitals of spinless fermions in an optical lattice. Strong, color-dependent interactions are induced by an optical Feshbach resonance. Starting from the microscopic scattering properties of ultracold atoms, we derive the orbital exchange constants at 1/3 filling on the cubic optical lattice. Using this, we compute the phase diagram in a Gutzwiller ansatz. We find phases with "axial orbital order" in which p z and px+ipy (or px-ipy) orbitals alternate. © 2011 American Physical Society.
2011
5
Hauke, Philipp; Zhao, Erhai; Goyal, Krittika; Deutsch, Ivan H.; Liu, W. Vincent; Lewenstein, Maciej
Orbital order of spinless fermions near an optical Feshbach resonance / Hauke, Philipp; Zhao, Erhai; Goyal, Krittika; Deutsch, Ivan H.; Liu, W. Vincent; Lewenstein, Maciej. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - ELETTRONICO. - 84:5(2011), pp. 051603.1-051603.5. [10.1103/PhysRevA.84.051603]
File in questo prodotto:
File Dimensione Formato  
PhysRevA.84.051603.pdf

Solo gestori archivio

Tipologia: Versione editoriale (Publisher’s layout)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 411.1 kB
Formato Adobe PDF
411.1 kB Adobe PDF   Visualizza/Apri
1103.5964.pdf

accesso aperto

Tipologia: Pre-print non referato (Non-refereed preprint)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 1.84 MB
Formato Adobe PDF
1.84 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/252200
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 13
  • ???jsp.display-item.citation.isi??? 13
social impact