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Volumn 80, Issue 13, 2009, Pages

Superfluid to Mott insulator transition of hardcore bosons in a superlattice

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EID: 70749150038     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.80.134508     Document Type: Article
Times cited : (39)

References (36)
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    • For homogeneous systems, the number of bosons in the zero-momentum mode coincides with the condensate occupation. However, this need not be the case in general, as the condensate occupation is defined as the largest eigenvalue of the one-particle density matrix. The latter quantity will in general be different from the occupation of the zero-momentum state if the system is inhomogeneous (Ref.).
    • For homogeneous systems, the number of bosons in the zero-momentum mode coincides with the condensate occupation. However, this need not be the case in general, as the condensate occupation is defined as the largest eigenvalue of the one-particle density matrix. The latter quantity will in general be different from the occupation of the zero-momentum state if the system is inhomogeneous (Ref.).


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