Journal Article


T. C. Dorlas
J.-B. Bru



energy high pressures gap mott insulator critical phase chemical behaviour

Exact solution of the infinite-range-hopping Bose-Hubbard model (2003)

Abstract The thermodynamic behaviour of the Bose-Hubbard model is solved for any temperature and any chemical potential. It is found that there is a range of of critical coupling strengths λ_c1 < λ_c2 < λ_c3 < ... in this model. For coupling strengths between λ_c,k and λ_c,(k+1), Bose-Einstein condensation is suppressed at densities near the integer values p = 1, ... , k with an energy gap. This is known as a Mott insulator phase and was previously shown only for zero temperature. In the context of ultra-cold atoms, this phenomenon was experimentally observed in 2002 [1] but, in the Bose-Hubbard model, it manifests itself also in the pressure-volume diagram at high pressures. It is suggested that this phenomenon persists for finite-range hopping and might also be experimentally observable.
Collections Ireland -> DAIR -> Open Access DRIVERset
Ireland -> DAIR -> Type = Article
Ireland -> DAIR -> Status = Preprint

Full list of authors on original publication

T. C. Dorlas, J.-B. Bru

Experts in our system

T. C. Dorlas
Total Publications: 44