title: Anisotropic mobility model for polymers under shear and its linear response functions.
abstract: We propose a simple dynamic model of polymers under shear with an anisotropic mobility tensor. We calculate the shear viscosity, the rheo-dielectric response function, and the parallel relaxation modulus under shear flow deduced from our model. We utilize recently developed linear response theories for nonequilibrium systems to calculate linear response functions. Our results are qualitatively consistent with experimental results. We show that our anisotropic mobility model can reproduce essential dynamical nature of polymers under shear qualitatively. We compare our model with other models or theories such as the convective constraint release model or nonequilibrium linear response theories.
authors.affiliation: JST-CREST and Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, Japan. uneyama@scl.kyoto-u.ac.jp
authors.forename: Takashi
authors.initials: T
authors.lastname: Uneyama
authors.forename: Kazushi
authors.initials: K
authors.lastname: Horio
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Watanabe