https://doi.org/10.1140/epjb/e20020040
Localization of polymers in a finite medium with fixed random obstacles
Department of Physics and Astronomy,
University of Pittsburgh, Pittsburgh PA 15260, USA
Corresponding author: a yadin@pitt.edu
Received:
14
August
2001
Published online: 15 February 2002
In this paper we investigate the conformation statistics of a Gaussian chain embedded in a medium of finite size, in the presence of quenched random obstacles. The similarities and differences between the case of random obstacles and the case of a Gaussian random potential are elucidated. The connection with the density of states of electrons in a metal with random repulsive impurities of finite range is discussed. We also interpret the results obtained in some previous numerical simulations.
PACS: 36.20.Ey – Conformation (statistics and dynamics) / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 75.10.Nr – Spin-glass and other random models / 64.60.Cn – Order-disorder transformations; statistical mechanics of model systems
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002
