Sunday, August 4, 2013

1308.0284 (Shamik Gupta et al.)

Anomalous dynamics of a tagged monomer of a long polymer chain: The case
of harmonic pinning and harmonic absorption

Shamik Gupta, Alberto Rosso, Christophe Texier
We study the anomalous dynamics of a tagged monomer of a Rouse polymer chain. In presence of harmonic pinning or harmonic absorption, an exact solution shows that a unique steady state is reached at long times. However, the initial configuration of the polymer strongly affects the approach to the steady state, that we explicitly compute for the one-dimensional case. Generalizations to higher dimensions and elastic interfaces are also discussed.
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