Short-time scaling behavior of growing interfaces

Details Short-time scaling behavior of growing interfaces Short-time scaling behavior of growing interfaces

1996-09-24

arxiv.org/abs/cond-mat/9609230v1

Physics

Condensed Matter

27 pages LaTeX with epsf style, 4 figures in eps format, submitted to Phys. Rev. E

Scientific paper

10.1103/PhysRevE.55.668

The short-time evolution of a growing interface is studied within the framework of the dynamic renormalization group approach for the Kadar-Parisi-Zhang (KPZ) equation and for an idealized continuum model of molecular beam epitaxy (MBE). The scaling behavior of response and correlation functions is reminiscent of the ``initial slip'' behavior found in purely dissipative critical relaxation (model A) and critical relaxation with conserved order parameter (model B), respectively. Unlike model A the initial slip exponent for the KPZ equation can be expressed by the dynamical exponent z. In 1+1 dimensions, for which z is known exactly, the analytical theory for the KPZ equation is confirmed by a Monte-Carlo simulation of a simple ballistic deposition model. In 2+1 dimensions z is estimated from the short-time evolution of the correlation function.

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