Phys. Rev. A 78, 042305 (2008) [7 pages]Entanglement and the speed of evolution in mixed statesReceived 15 June 2008; published 8 October 2008 Entanglement speeds up evolution of a pure bipartite spin state, in line with the time-energy uncertainty. However, if the state is mixed this is not necessarily the case. We provide a counterexample and point to other factors affecting evolution in mixed states, including classical correlations and entropy. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.78.042305
DOI:
10.1103/PhysRevA.78.042305
PACS:
03.67.Mn
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