title: Phase behavior of active swimmers in depletants: molecular dynamics and integral equation theory.
abstract: We study the structure and phase behavior of a binary mixture where one of the components is self-propelling in nature. The interparticle interactions in the system are taken from the Asakura-Oosawa model for colloid-polymer mixtures for which the phase diagram is known. In the current model version, the colloid particles are made active using the Vicsek model for self-propelling particles. The resultant active system is studied by molecular dynamics methods and integral equation theory. Both methods produce results consistent with each other and demonstrate that the Vicsek model-based activity facilitates phase separation, thus, broadening the coexistence region.
authors.affiliation: Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur Post Office, Bangalore 560064, India.
authors.forename: Subir K
authors.initials: SK
authors.lastname: Das
authors.affiliation: Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901, USA.
authors.forename: Sergei A
authors.initials: SA
authors.lastname: Egorov
authors.affiliation: Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, 55128 Mainz, Germany and Graduate School of Excellence Material Science in Mainz, Staudinger Weg 7, 55128 Mainz, Germany.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Trefz
authors.affiliation: Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, 55128 Mainz, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Virnau
authors.affiliation: Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, 55128 Mainz, Germany.
authors.forename: Kurt
authors.initials: K
authors.lastname: Binder
mesh_terms: D003102:Colloids; D004058:Diffusion; D007700:Kinetics; D008954:Models, Biological; D008956:Models, Chemical; D008962:Models, Theoretical; D056004:Molecular Dynamics Simulation; D009068:Movement; D011108:Polymers
chemical_list: D003102:Colloids; D011108:Polymers