Bose-Fermi mixtures in an optical lattice

Journal Article · Fri Jun 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.75.063625· OSTI ID:21000510

Sengupta, K ^[1]; Dupuis, N ^[2]; Majumdar, P ^[3]

---

1. Theoretical Condensed Matter Physics Division and Center for Applied Mathematics and Computational Science, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata-700064 (India)
2. Department of Mathematics, Imperial College, 180 Queen's Gate, London SW7 2AZ (United Kingdom)
3. Cavendish Laboratory, Cambridge University, Madingley Road, Cambridge CB3 0HE (United Kingdom)

We study an atomic Bose-Fermi mixture with unpolarized fermions in an optical lattice. We obtain the Mott ground states of such a system in the limit of the deep optical lattice and discuss the effect of quantum fluctuations on these states. We also study the superfluid-insulator transitions of bosons and metal-insulator transition of fermions in such a mixture within a slave-rotor mean-field approximation, and obtain the corresponding phase diagram. We discuss experimental implications of our results.

• OSTI ID: 21000510
• Journal Information: Physical Review. A, Vol. 75, Issue 6; Other Information: DOI: 10.1103/PhysRevA.75.063625; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
APPROXIMATIONS
BOSONS
FERMIONS
FLUCTUATIONS
GROUND STATES
MEAN-FIELD THEORY
METALS
OPTICAL MODELS
PHASE DIAGRAMS
SUPERFLUIDITY