IFIMAR   20926
INSTITUTO DE INVESTIGACIONES FISICAS DE MAR DEL PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Conserved surface dynamics with(out) deposition or relaxation
Autor/es:
R. C. BUCETA; D. HANSMANN
Lugar:
La Falda, Córdoba
Reunión:
Congreso; TREFEMAC 2012 - 10° Congreso Regional de Física Estadística y Aplicaciones a la Materia Condensada; 2012
Institución organizadora:
FAMAF, UN de Córdoba
Resumen:
First, we consider the 1-dimensional particle model with symmetric hopping rate suggested by Krug [Adv.Phys. 46 (1997) 139] in order to obtain a conserved Kardar-Parisi-Zhang (cKPZ) equation. Following a coarse-grained technique, introduced by us (in oral session), we show how to determine the coefficients of the continuous differential equation (CDE). Our approach is based on small translations within a test space, which change the cKPZ kernel and permit to obtain their coefficients. Then we consider the model with asymmetric hopping rate introduced by Jung and Kim [PRE 59 (1999) 7224] that add a Laplacian term to the cKPZ terms. Finally, we take the known Family model of deposition with relaxation, in order to show that the CDE contains a small cKPZ contribution additional to the usual ones (Laplacian and constant). Following the above method, we determine the coefficients for the models considered.
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