Condensed Matter Physics, 2013, vol. 16, No. 3, p. 34601:1-6
Randomly charged polymers in porous environment
(Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine, 1 Svientsitskii St., 79011 Lviv, Ukraine)
C. von Ferber
(Applied Mathematics Research Centre, Coventry University, CV1 5FB Coventry, UK)
We study the conformational properties of charged polymers in a solvent in the presence of structural obstacles correlated according to a power law ~x-a. We work within the continuous representation of a model of linear chain considered as a random sequence of charges qi=± q0. Such a model captures the properties of polyampholytes~-- heteropolymers comprising both positively and negatively charged monomers. We apply the direct polymer renormalization scheme and analyze the scaling behavior of charged polymers up to the first order of an ε=6-d, δ=4-a-expansion.
polymers, quenched disorder, scaling, renormalization group
61.25.hp, 11.10.Hi, 64.60.ae, 89.75.Da