Polymers in long-range-correlated disorder

Details Polymers in long-range-correlated disorder Polymers in long-range-correlated disorder

2001-07-06

arxiv.org/abs/cond-mat/0107135v1

Phys. Rev. E 64 (2001) 041102

Physics

Condensed Matter

Soft Condensed Matter

13 pages, 5 figures

Scientific paper

10.1103/PhysRevE.64.041102

We study the scaling properties of polymers in a d-dimensional medium with quenched defects that have power law correlations ~r^{-a} for large separations r. This type of disorder is known to be relevant for magnetic phase transitions. We find strong evidence that this is true also for the polymer case. Applying the field-theoretical renormalization group approach we perform calculations both in a double expansion in epsilon=4-d and delta=4-a up to the 1-loop order and secondly in a fixed dimension (d=3) approach up to the 2-loop approximation for different fixed values of the correlation parameter, 2=

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