INVESTIGADORES
HOROWITZ Claudio
artículos
Título:
Numerical study of the development of bulk scale-free structures upon growth of self-affine aggregates
Autor/es:
ROMA FEDERICO; HOROWITZ CLAUDIO; ALBANO EZEQUIEL
Revista:
PHYSICAL REVIEW E - STATISTICAL PHYSICS, PLASMAS, FLUIDS AND RELATED INTERDISCIPLINARY TOPICS
Editorial:
The American Physical Society
Referencias:
Año: 2002 vol. 66 p. 661151 - 661158
ISSN:
1063-651X
Resumen:
During
the last decade, self-affine geometrical properties of many growing
aggregates, originated in a wide variety of processes, have been well
characterized. However, little progress has been achieved in the
search of a unified description of the underlying dynamics. Extensive
numerical evidence has been given showing that the bulk of aggregates
formed upon ballistic aggregation andrandom deposition with surface
relaxation processes can be broken down into a set of infinite scale
invariant structures called "trees". These two types of aggregates have
been selected because it has been established that they belong to
different universality classes: those of Kardar-Parisi-Zhang and
Edward-Wilkinson, respectively. Exponents describing the spatial and
temporal scale invariance
of
the trees can be related to the classical exponents describing the
self-affine nature of the growing interface. Furthermore, those
exponents allows us to distinguish either the compact or non-compact
nature of the growing trees. Therefore, the measurement of the
statistic of the process of growing trees may become a useful
experimental technique for the evaluation of the self-affine properties
of some aggregates.