Details
| Original language | English |
|---|---|
| Article number | 170401 |
| Journal | Physical Review Letters |
| Volume | 95 |
| Issue number | 17 |
| Publication status | Published - 17 Oct 2005 |
| Externally published | Yes |
Abstract
We consider the physics of lattice bosons affected by disordered on-site interparticle interactions. Characteristic qualitative changes in the zero-temperature phase diagram are observed when compared to the case of randomness in the chemical potential. The Mott-insulating regions shrink and eventually vanish for any finite disorder strength beyond a sufficiently large filling factor. Furthermore, at low values of the chemical potential both the superfluid and Mott insulator are stable towards formation of a Bose glass leading to a possibly nontrivial tricritical point. We discuss feasible experimental realizations of our scenario in the context of ultracold atoms on optical lattices.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical Review Letters, Vol. 95, No. 17, 170401, 17.10.2005.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Ultracold atoms in optical lattices with random on-site interactions
AU - Gimperlein, H.
AU - Wessel, S.
AU - Schmiedmayer, Jörg
AU - Santos, Luis
PY - 2005/10/17
Y1 - 2005/10/17
N2 - We consider the physics of lattice bosons affected by disordered on-site interparticle interactions. Characteristic qualitative changes in the zero-temperature phase diagram are observed when compared to the case of randomness in the chemical potential. The Mott-insulating regions shrink and eventually vanish for any finite disorder strength beyond a sufficiently large filling factor. Furthermore, at low values of the chemical potential both the superfluid and Mott insulator are stable towards formation of a Bose glass leading to a possibly nontrivial tricritical point. We discuss feasible experimental realizations of our scenario in the context of ultracold atoms on optical lattices.
AB - We consider the physics of lattice bosons affected by disordered on-site interparticle interactions. Characteristic qualitative changes in the zero-temperature phase diagram are observed when compared to the case of randomness in the chemical potential. The Mott-insulating regions shrink and eventually vanish for any finite disorder strength beyond a sufficiently large filling factor. Furthermore, at low values of the chemical potential both the superfluid and Mott insulator are stable towards formation of a Bose glass leading to a possibly nontrivial tricritical point. We discuss feasible experimental realizations of our scenario in the context of ultracold atoms on optical lattices.
UR - http://www.scopus.com/inward/record.url?scp=28844460530&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.95.170401
DO - 10.1103/PhysRevLett.95.170401
M3 - Article
AN - SCOPUS:28844460530
VL - 95
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 17
M1 - 170401
ER -