Crossover Scaling Functions in One Dimensional Dynamic Growth Models

Details Crossover Scaling Functions in One Dimensional Dynamic Growth Models Crossover Scaling Functions in One Dimensional Dynamic Growth Models

1994-06-21

arxiv.org/abs/cond-mat/9406086v1

Physics

Condensed Matter

11 pages, TeX, figures upon request

Scientific paper

10.1103/PhysRevLett.74.730

The crossover from Edwards-Wilkinson ($s=0$) to KPZ ($s>0$) type growth is studied for the BCSOS model. We calculate the exact numerical values for the $k=0$ and $2\pi/N$ massgap for $N\leq 18$ using the master equation. We predict the structure of the crossover scaling function and confirm numerically that $m_0\simeq 4 (\pi/N)^2 [1+3u^2(s) N/(2\pi^2)]^{0.5}$ and $m_1\simeq 2 (\pi/N)^2 [1+ u^2(s) N/\pi^2]^{0.5}$, with $u(1)=1.03596967$. KPZ type growth is equivalent to a phase transition in meso-scopic metallic rings where attractive interactions destroy the persistent current; and to endpoints of facet-ridges in equilibrium crystal shapes.

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