Phys. Rev. A 80, 032316 (2009) [5 pages]Entanglement dynamics of spin systems in pure statesReceived 23 June 2009; published 16 September 2009 We investigate numerically the appearance and evolution of entanglement in spin systems prepared initially in a pure state. We consider the dipolar coupling spin systems of different molecular structures: benzene C6H6, cyclopentane C5H10, sodium butyrate CH3(CH2)2CO2Na, and calcium hydroxyapatite Ca5(OH)(PO4)3. Numerical simulations show that the close relationship exists between the intensity of second order (2Q) coherences and concurrences of nearest spins in a cyclopentane molecule. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.80.032316
DOI:
10.1103/PhysRevA.80.032316
PACS:
03.67.Mn, 76.60.−k
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