Abstract
We consider atomic mixtures of bosons and two-component fermions in an optical lattice potential. We show that if the bosons are in a Mott-insulator state with precisely one atom per lattice, the photoassociation of bosonic and fermionic atoms into heteronuclear fermionic molecules is described by the Anderson lattice model. We determine the ground-state properties of an inhomogeneous version of that model in the strong atom-molecule coupling regime, including an additional harmonic trap potential. Various spatial structures arise from the interplay between the atom-molecule correlations and the confining potential. Perturbation theory with respect to the tunneling coupling between fermionic atoms shows that antiferromagnetic correlations develop around a spin-singlet core of fermionic atoms and molecules.
| Original language | English (US) |
|---|---|
| Article number | 021601 |
| Journal | Physical Review A |
| Volume | 73 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2006 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
Cite this
Anderson lattice description of photoassociation in an optical lattice. / Miyakawa, Takahiko; Meystre, Pierre.
In: Physical Review A, Vol. 73, No. 2, 021601, 2006.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Anderson lattice description of photoassociation in an optical lattice
AU - Miyakawa, Takahiko
AU - Meystre, Pierre
PY - 2006
Y1 - 2006
N2 - We consider atomic mixtures of bosons and two-component fermions in an optical lattice potential. We show that if the bosons are in a Mott-insulator state with precisely one atom per lattice, the photoassociation of bosonic and fermionic atoms into heteronuclear fermionic molecules is described by the Anderson lattice model. We determine the ground-state properties of an inhomogeneous version of that model in the strong atom-molecule coupling regime, including an additional harmonic trap potential. Various spatial structures arise from the interplay between the atom-molecule correlations and the confining potential. Perturbation theory with respect to the tunneling coupling between fermionic atoms shows that antiferromagnetic correlations develop around a spin-singlet core of fermionic atoms and molecules.
AB - We consider atomic mixtures of bosons and two-component fermions in an optical lattice potential. We show that if the bosons are in a Mott-insulator state with precisely one atom per lattice, the photoassociation of bosonic and fermionic atoms into heteronuclear fermionic molecules is described by the Anderson lattice model. We determine the ground-state properties of an inhomogeneous version of that model in the strong atom-molecule coupling regime, including an additional harmonic trap potential. Various spatial structures arise from the interplay between the atom-molecule correlations and the confining potential. Perturbation theory with respect to the tunneling coupling between fermionic atoms shows that antiferromagnetic correlations develop around a spin-singlet core of fermionic atoms and molecules.
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U2 - 10.1103/PhysRevA.73.021601
DO - 10.1103/PhysRevA.73.021601
M3 - Article
AN - SCOPUS:33144464956
VL - 73
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 2
M1 - 021601
ER -