Comment on ``Nonuniversal Exponents in Interface Growth''

Details Comment on ``Nonuniversal Exponents in Interface Growth'' Comment on ``Nonuniversal Exponents in Interface Growth''

1998-09-13

arxiv.org/abs/cond-mat/9809184v1

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1103/PhysRevLett.81.5471

Recently, Newman and Swift[T. J. Newman and M. R. Swift, Phys. Rev. Lett. {\bf 79}, 2261 (1997)] made an interesting suggestion that the strong-coupling exponents of the Kardar-Parisi-Zhang (KPZ) equation may not be universal, but rather depend on the precise form of the noise distribution. We show here that the decrease of surface roughness exponents they observed can be attributed to a percolative effect.

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