244 citations · 890 across the 16 of their papers we have counts for
4 papers · 1 filter
Properties of the Superfluid in the Disordered Bose-Hubbard Model
Bruno R. de Abreu, Ushnish Ray, Silvio A. Vitiello +1
We investigate the properties of the superfluid phase in the three-dimensional disordered Bose-Hubbard model using Quantum Monte-Carlo simulations. The phase diagram is generated u…
Probing the Bose-Glass--Superfluid Transition using Quantum Quenches of Disorder
C. Meldgin, U. Ray, P. Russ +2
We probe the transition between superfluid and Bose glass phases using quantum quenches of disorder in an ultracold atomic lattice gas that realizes the disordered Bose-Hubbard mod…
Metastable Bose-Einstein Condensation in a Strongly Correlated Optical Lattice
David McKay, Ushnish Ray, Stefan Natu +3
We experimentally and theoretically study the peak fraction of a Bose-Einstein condensate loaded into a cubic optical lattice as the lattice potential depth and entropy per particl…
Revealing the Condensate and Non-Condensate Distributions in the Inhomogeneous Bose-Hubbard Model
Ushnish Ray, David M. Ceperley
We calculate the condensate fraction and the condensate and non-condensate spatial and momentum distribution of the Bose-Hubbard model in a trap. From our results, it is evident th…