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Volumn 80, Issue 4, 2009, Pages

Numerical evaluation of convex-roof entanglement measures with applications to spin rings

Author keywords

[No Author keywords available]

Indexed keywords

CONVERGENCE PROPERTIES; COUPLED SPINS; ENTANGLED STATE; ENTANGLEMENT MEASURE; ENTANGLEMENT MONOTONES; FINITE TEMPERATURES; HEISENBERG EXCHANGE; IN-PLANE FIELD GEOMETRY; LOW TEMPERATURES; MAGNETIC FIELD CONFIGURATIONS; NUMERICAL ALGORITHMS; NUMERICAL EVALUATIONS; NUMERICAL TESTS; OPTIMAL VALUES; ROTATIONAL SYMMETRIES; SPIN RINGS; SPIN-S SYSTEMS;

EID: 70349909616     PISSN: 10502947     EISSN: 10941622     Source Type: Journal    
DOI: 10.1103/PhysRevA.80.042301     Document Type: Article
Times cited : (46)

References (51)
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    • We mention, however, that there are also measures of entanglement which are not maximized by the n -partite GHZ state Eq. 1. Moreover, some measures ascribe this state an unexpectedly low amount of entanglement for n>3. See, e.g., Ref. for an extensive numerical study.
    • We mention, however, that there are also measures of entanglement which are not maximized by the n -partite GHZ state Eq. 1. Moreover, some measures ascribe this state an unexpectedly low amount of entanglement for n>3. See, e.g., Ref. for an extensive numerical study.
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    • Since for the number of particles N considered in Sec. 4 the splitting between the lowest and the next-higher multiplets is still always large compared to temperature, we diagonalize only the lowest-lying (N+1) -dimensional subspace of H using a Lanczos algorithm
    • Since for the number of particles N considered in Sec. 4 the splitting between the lowest and the next-higher multiplets is still always large compared to temperature, we diagonalize only the lowest-lying (N+1) -dimensional subspace of H using a Lanczos algorithm.


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