BPCPPDYSOE21 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 32: Posters DY - Statistical Physics, Brownian Motion and Nonlinear Dynamics

DY 32.13: Poster

Tuesday, March 23, 2021, 16:30–19:00, DYp

Phase separation: from colloids to biological mixtures — •Filipe C. Thewes — Institute for Theoretical Physics, Georg-August-Universität Göttingen, 37077 Göttingen, Germany

Understanding the dynamics of phase separation in complex mixtures remains a profound challenge. In this work, we aim to build a bridge between the well-studied area of phase separation in colloidal systems and its intriguing and complex biological counterpart. We first introduce a model that interpolates between the two limiting cases and investigate the phase diagram using techniques of random matrix theory. Second, in order to understand the competing mechanisms leading to phase separation, we perform lattice simulations within a mean-field approximation and analyse the time evolution of the system in different regions of the parameter space. In the colloidal limit the model reproduces known results from the existing literature. On the biological side, our simulations provide new insights into the competing scaling obtained by early and late time analysis in the random interaction model. The intermediate regime shows new crossovers between condensation and demixing-dominated kinetics. Time permitting, results will be shown from further exploration of the model with a focus on crowding effects.