Quantum phases of ultracold bosonic atoms in a one-dimensional optical superlattice

dc.contributor.author	Dhar, A.
dc.contributor.author	Mishra, T.
dc.contributor.author	Pai, R.V.
dc.contributor.author	Das, B.P.
dc.date.accessioned	2015-06-04T03:13:51Z
dc.date.available	2015-06-04T03:13:51Z
dc.date.issued	2011
dc.identifier.citation	Physical Review A. 83(5); 2011; Article ID: 053621.	en_US
dc.identifier.uri	http://dx.doi.org/10.1103/PhysRevA.83.053621
dc.identifier.uri	http://irgu.unigoa.ac.in/drs/handle/unigoa/2653
dc.description.abstract	We analyze various quantum phases of ultracold bosonic atoms in a periodic one-dimensional optical superlattice. Our studies have been performed using the finite-size density-matrix renormalization group method in the framework of the Bose-Hubbard model. Calculations have been carried out for a wide range of densities and the energy shifts due to the superlattice potential. At commensurate fillings, we find the Mott insulator and the superfluid phases as well as Mott insulators induced by the superlattice. At a particular incommensurate density, the system is found to be in the superfluid phase coexisting with density oscillations for a certain range of parameters of the system.	en_US
dc.publisher	American Physical Society	en_US
dc.subject	Physics	en_US
dc.title	Quantum phases of ultracold bosonic atoms in a one-dimensional optical superlattice	en_US
dc.type	Journal article	en_US
dc.identifier.impf	y