Ramanan, S and Mishra, Tapan and Luthra, Meetu Sethi and Pai, Ramesh V and Das, BP (2009) Signatures of the superfluid-to-Mott-insulator transition in cold bosonic atoms in a one-dimensional optical lattice. In: Physical Review A, 79 (1). 013625-1-013625-8.
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We study the Bose-Hubbard model using the finite size density matrix renormalization group method. We obtain a complete phase diagram for a system in the presence of a harmonic trap and compare it with that of the homogeneous system. The superfluid to the Mott-insulator phase transition is investigated using different experimental signatures of these phases in quantities such as momentum distribution, visibility, condensate fraction, and the total number of bosons at a particular density. The relationships between the various experimental signatures and the phase diagram are highlighted.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to The American Physical Society.|
|Keywords:||boson systems;metal-insulator transition;optical lattices;phase diagrams;renormalisation;superfluidity.|
|Department/Centre:||Division of Physical & Mathematical Sciences > Centre for High Energy Physics|
|Date Deposited:||30 Oct 2009 10:33|
|Last Modified:||19 Sep 2010 05:27|
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