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Decay of the Loschmidt Echo for quantum states with sub-Planck scale structures

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Jacquod, P. ; Adagideli, Inanc ; Beenakker, C.
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Date of publication of this fulltext: 05 Aug 2009 13:33


Quantum states extended over a large volume in phase space have oscillations from quantum interferences in their Wigner distribution on scales smaller than $\\hbar$ [W.H. Zurek, Nature {\\bf 412}, 712 (2001)]. We investigate the influence of those sub-Planck scale structures on the sensitivity to an external perturbation of the state\'s time evolution. While we do find an accelerated decay of the ...


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