Physics – Mathematical Physics
Scientific paper
2005-09-26
Commun. Math. Phys. 266, 777-795 (2006)
Physics
Mathematical Physics
20 pages
Scientific paper
10.1007/s00220-006-0038-9
We use mathematically rigorous perturbation theory to study the transition
between the Mott insulator and the conjectured Bose-Einstein condensate in a
hard-core Bose-Hubbard model. The critical line is established to lowest order
in the tunneling amplitude.
Fernández Roberto
Froehlich Juerg
Ueltschi Daniel
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