Loschmidt echo for the many-electron dynamics in nonparabolic quantum wells

Details Loschmidt echo for the many-electron dynamics in nonparabolic quantum wells Loschmidt echo for the many-electron dynamics in nonparabolic quantum wells

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009njph...11a3050m&link_type=abstract

New Journal of Physics, Volume 11, Issue 1, pp. 013050 (2009).

Physics

2

Scientific paper

The Loschmidt echo (or quantum fidelity) is investigated in the context of the many-body electron dynamics in a nonparabolic quantum well, modeled by the self-consistent Wigner-Poisson system. The quantum fidelity drops abruptly after a quiescent period, as was observed for other self-interacting systems. A unifying interpretation of this phenomenon is given in terms of trajectory separation and the Ehrenfest time. The effects of Planck's constant and environment-induced decoherence are also studied.

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