Universality classes in the anisotropic Kardar-Parisi-Zhang model

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2002-09-01

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E D P Sciences

Abstract

We study the effect of generic spatial anisotropies on the scaling behavior in the Kardar-Parisi-Zhang equation. In contrast to its “conserved” variants, anisotropic perturbations are found to be relevant in d > 2 dimensions, leading to rich phenomena that include novel universality classes and the possibility of first-order phase transitions and multicritical behavior. These results question the presumed scaling universality in the strong-coupling rough phase, and shed further light on the connection with generalized driven diffusive systems.

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Physics, Multidisciplinary, Physics, PULLED FRONTS, DYNAMICS, GROWTH, RENORMALIZATION, EQUATION, 2-TEMPERATURE, INTERFACES, POINT, NOISE

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