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    THE WIGNER–FOKKER–PLANCK EQUATION: STATIONARY STATES AND LARGE TIME BEHAVIOR

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    Type
    Article
    Authors
    ARNOLD, ANTON
    GAMBA, IRENE M.
    GUALDANI, MARIA PIA
    MISCHLER, STÉPHANE
    MOUHOT, CLEMENT
    SPARBER, CHRISTOF
    Date
    2012-09-10
    Online Publication Date
    2012-09-10
    Print Publication Date
    2012-11
    Permanent link to this record
    http://hdl.handle.net/10754/599977
    
    Metadata
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    Abstract
    We consider the linear WignerFokkerPlanck equation subject to confining potentials which are smooth perturbations of the harmonic oscillator potential. For a certain class of perturbations we prove that the equation admits a unique stationary solution in a weighted Sobolev space. A key ingredient of the proof is a new result on the existence of spectral gaps for FokkerPlanck type operators in certain weighted L 2-spaces. In addition we show that the steady state corresponds to a positive density matrix operator with unit trace and that the solutions of the time-dependent problem converge towards the steady state with an exponential rate. © 2012 World Scientific Publishing Company.
    Citation
    ARNOLD A, GAMBA IM, GUALDANI MP, MISCHLER S, MOUHOT C, et al. (2012) THE WIGNER–FOKKER–PLANCK EQUATION: STATIONARY STATES AND LARGE TIME BEHAVIOR. Mathematical Models and Methods in Applied Sciences 22: 1250034. Available: http://dx.doi.org/10.1142/S0218202512500340.
    Sponsors
    A.A. acknowledges partial support from the FWF (project "Quantum Transport Equations: Kinetic, Relativistic, and Diffusive Phenomena" and Wissenschaftskolleg "Differentialgleichungen"), the OAD (Amadeus project). I.M.G. is supported by NSF-DMS 0807712. M.P.G. is supported by NSF-DMS-1109682. C.M. would like to thank Cambridge University for providing repeated hospitality in 2009, thanks to the Award No. KUK-I1-007-43, funded by the King Abdullah University of Science and Technology (KAUST). Support from the Institute of Computational Engineering and Sciences at the University of Texas at Austin is also gratefully acknowledged.
    Publisher
    World Scientific Pub Co Pte Lt
    Journal
    Mathematical Models and Methods in Applied Sciences
    DOI
    10.1142/S0218202512500340
    ae974a485f413a2113503eed53cd6c53
    10.1142/S0218202512500340
    Scopus Count
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