| Issue |
Europhys. Lett.
Volume 59, Number 5, September 2002
|
|
|---|---|---|
| Page(s) | 655 - 661 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2002-00175-8 | |
| Published online | 01 September 2002 | |
Universality classes in the anisotropic Kardar-Parisi-Zhang model
1
Department of Physics, Virginia Tech - Blacksburg,
VA 24061-0435, USA
2
Hahn–Meitner Institut, Abteilung Theorie -
D-14109 Berlin, Germany
3
Freie Universität Berlin,
Fachbereich Physik Arnimallee 14, D-14195 Berlin, Germany
Received:
8
March
2002
Accepted:
5
June
2002
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.
PACS: 05.40.-a – Fluctuation phenomena, random processes, and Brownian motion / 64.60.Ak – Renormalization-group, fractal, and percolation studies of phase transitions / 64.60.Ht – Dynamic critical phenomena
© EDP Sciences, 2002
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