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Localization of polymers in a finite medium with fixed random obstacles |
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| Authors: | YY Goldschmidt Y Shiferaw |
| Institution: | (1) Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh PA 15260, USA, US |
| Abstract: | 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. Received 14 August 2001 |
| Keywords: | 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 |
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