IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Generalized information deficit and quantum discord in spin chains
Autor/es:
N. CANOSA; L. CILIBERTI; R. ROSSIGNOLI
Lugar:
Rio de Janeiro
Reunión:
Congreso; Complex systems foundations and applications; 2013
Institución organizadora:
CNPQ
Resumen:
We examine the quantum correlations of spin pairs in spin 1/2 chains in an applied transverse field $B$, through the analysis of the quantum discord and the generalized information deficit based on general entropic forms. The latter contains, as particular cases, the von Neumann based one-way information deficit, the geometric discord and the $q$-discord. It is shown [1] that all these quantities provide the same qualitative information. In the case of Heisenberg-type $XY$ chains, they all reach full range for $|B|
rds']