Journal
COMPUTERS & MATHEMATICS WITH APPLICATIONS
Volume 46, Issue 10-11, Pages 1683-1690Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0898-1221(03)90202-1
Keywords
Fokker-Planck equation; relative entropy; logarithmic Sobolev inequality; exponential decay rate
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In this paper, we study the large time behavior of a fully implicit semidiscretization (in time) of parabolic Fokker-Planck type equations. Using logarithmic Sobolev inequalities exponential decay of the relative entropy (w.r.t. the steady state) is proved which yields convergence of the discrete scheme towards the unique steady state. The exponential decay rate recovers as Deltat down arrow 0 the decay rate of the original Fokker-Planck type equations. (C) 2003 Elsevier Ltd. All rights reserved.
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