Phase diagram of a bosonic ladder with two coupled chains

dc.contributor.author	Luthra, M.S.
dc.contributor.author	Mishra, T.
dc.contributor.author	Pai, R.V.
dc.contributor.author	Das, B.P.
dc.date.accessioned	2015-06-03T09:59:43Z
dc.date.available	2015-06-03T09:59:43Z
dc.date.issued	2008
dc.identifier.citation	Physical Review B. 78(16); 2008; Article ID: 165104	en_US
dc.identifier.uri	http://dx.doi.org/10.1103/PhysRevB.78.165104
dc.identifier.uri	http://irgu.unigoa.ac.in/drs/handle/unigoa/2189
dc.description.abstract	We study a bosonic ladder with two coupled chains using the finite-size density-matrix renormalization group method. We show that in a commensurate bosonic ladder the critical on-site interaction (U(C)) for the superfluid to Mott insulator transition gets larger as the interchain hopping (t(perpendicular to)) increases. We analyze this quantum phase transition and obtain the phase diagram in the t(perpendicular to)-U plane. We also consider the asymmetric case where the on-site interactions are different in the two chains and have shown that the system as a whole will not be in the Mott insulator phase unless both the chains have on-site interactions greater than the critical value.	en_US
dc.publisher	American Physical Society	en_US
dc.subject	Physics	en_US
dc.title	Phase diagram of a bosonic ladder with two coupled chains	en_US
dc.type	Journal article	en_US
dc.identifier.impf	y