Improved Perturbation Theory for the Kardar-Parisi-Zhang Equation

Details Improved Perturbation Theory for the Kardar-Parisi-Zhang Equation Improved Perturbation Theory for the Kardar-Parisi-Zhang Equation

1995-05-09

arxiv.org/abs/cond-mat/9505038v1

Physics

Condensed Matter

12 pages, revtex, 1 table

Scientific paper

10.1103/PhysRevE.52.4741

We apply a number of schemes which variationally improve perturbation theory for the Kardar-Parisi-Zhang equation in order to extract estimates for the dynamic exponent z. The results for the various schemes show the same broad features, giving closer agreement with numerical simulations in low dimensions than self-consistent methods. They do, however, continue to predict that z=2 in some critical dimension d_c in disagreement with the findings of simulations.

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