Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Surfactant-Mediated Surface Growth: Nonequilibrium Theory   A number of recent experiments have showed that surfactants can modify the
growth mode of an epitaxial film, suppressing islanding and promoting
layer-by-layer growth. Here a set of coupled equations are introduced to
describe the coupling between a growing interface and a thin surfactant layer
deposited on the top of the nonequilibrium surface . The equations are derived
using the main experimentally backed characteristics of the system and basic
symmetry principles. The system is studied using a
dynamic-renormalization-group scheme, which provides scaling relations between
the roughness exponents. It is found that the surfactant may drive the system
into a novel phase, in which the surface roughness is negative, corresponding
to a flat surface.

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The categories of this paper are: hep-th
16
The categories of this paper are: stat
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph