5 papers
Microscopic derivation of a field equation for active Brownian particles
Martín Pinto-Goldberg, Rodrigo Soto
To understand the phenomena displayed in active phase separation, general top-down theories like Active Model B+ (AMB+) add fluxes that break time reversal symmetry. Starting from…
Stress tensor field and mesoscopic stresses in the vertex model for tissues
Paulo C. Godolphim, Leonardo G. Brunnet, Rodrigo Soto
Mechanical stresses are fundamental regulators in biological tissues, where the vertex model (VM) is pivotal for theoretical and force-inference studies. Yet, no uniform expression…
Parameter degeneracy in the vertex model for tissues
Paulo C. Godolphim, Leonardo G. Brunnet, Rodrigo Soto
The vertex model with homogeneous cell properties is known to exhibit a parameter degeneracy in which the system's dynamics is independent of the target area. Here, we show, for th…
Hydrodynamic Equations for Active Brownian Particles in the High Persistence Regime
MartÃn Pinto-Goldberg, Rodrigo Soto
In the high persistence regime of non-inertial active Brownian particles (ABP), polarization becomes a relevant dynamical field. Based on a recently proposed kinetic description fo…
Two-field theory for phase coexistence of active Brownian particles
Pablo Perez-BastÃas, Rodrigo Soto
Active Brownian particles (ABPs) serve as a minimal model of active matter systems. When ABPs are sufficiently persistent, they undergo a liquid-gas phase separation and, in the pr…