NPAC Technical Report SCCS-330
On Heteropolymer Shape Dynamics
P Pliszka, E Marinari
Submitted July 09 1992
Abstract
We investigate the time evolution of the heteropolymer model
introduced by Iori, Marinari and Parisi to describe some of the
features of protein folding mechanisms. We study how the (folded)
shape of the chain evolves in time. We find that for short times the
mean square distance (squared) between chain configurations evolves
according to a power law, $D \sim t ^\nu$. We discuss the
influence of the quenched disorder (represented by the randomness
of the coupling constants in the Lennard-Jones potential) on value of
the critical exponent. We find that $\nu$ decreases from
2/3 to 1/2 when the strength of the quenched
disorder increases.