IFIMAR 20926
INSTITUTO DE INVESTIGACIONES FISICAS DE MAR DEL PLATA
Unidad Ejecutora - UE
artículos
Título:
Effects of length fluctuations on the viscosity exponent in the necklace model
Autor/es:
C. M. ALDAO; G. R. TERRANOVA; H. O. MÁRTIN
Revista:
JOURNAL OF PHYSICS. A - MATHEMATICAL AND GENERAL
Editorial:
IOP
Referencias:
Año: 2009 vol. 42 p. 165005 - 165016
ISSN:
0305-4470
Resumen:
It is regularly accepted that contour length fluctuations increase the viscosity exponent for chains that diffuse by reptation. We found that length fluctuations in the necklace model can play an unexpected role decreasing the value of this exponent. A detailed analysis of the interplay between the discrete character of the model and how the fluctuations take place is presented in this work. Basically, we found that, when fluctuations are symmetric their influence is the expected one; when fluctuations are not symmetric new effects can appear.
