Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 170401 |
| Fachzeitschrift | Physical Review Letters |
| Jahrgang | 95 |
| Ausgabenummer | 17 |
| Publikationsstatus | Veröffentlicht - 17 Okt. 2005 |
| Extern publiziert | Ja |
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 Sachgebiete
- Physik und Astronomie (insg.)
- Allgemeine Physik und Astronomie
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in: Physical Review Letters, Jahrgang 95, Nr. 17, 170401, 17.10.2005.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › 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 -