35 citations · 111 across the 9 of their papers we have counts for
9 papers
Composite search of active particles in three-dimensional space based on non-directional cues
Justus A. Kromer, Andrea Auconi, Benjamin M. Friedrich
We theoretically address minimal search strategies of active, self-propelled particles towards hidden targets in three-dimensional space. The particles can sense if a target is clo…
Chemokinetic scattering, trapping, and avoidance of active Brownian particles
Justus A. Kromer, Noelia de la Cruz, Benjamin M. Friedrich
We present a theory of chemokinetic search agents that regulate directional fluctuations according to distance from a target. A dynamic scattering effect reduces the probability to…
Variability of collective dynamics in random tree networks of strongly-coupled stochastic excitable elements
Ali Khaledi-Nasab, Justus A. Kromer, Lutz Schimansky-Geier +1
We study the collective dynamics of strongly diffusively coupled excitable elements on small random tree networks. Stochastic external inputs are applied to the leaves causing larg…
Optimal decision making for sperm chemotaxis in the presence of noise
Justus A. Kromer, Steffen Märcker, Steffen Lange +2
For navigation, microscopic agents such as biological cells rely on noisy sensory input. In cells performing chemotaxis, such noise arises from the stochastic binding of signaling…
Emergent stochastic oscillations and signal detection in tree networks of excitable elements
Justus Kromer, Ali Khaledi-Nasab, Lutz Schimansky-Geier +1
We study the stochastic dynamics of strongly-coupled excitable elements on a tree network. The peripheral nodes receive independent random inputs which may induce large spiking eve…
Emergence and coherence of oscillations in star networks of stochastic excitable elements
Justus A. Kromer, Lutz Schimansky-Geier, Alexander B. Neiman
We study the emergence and coherence of stochastic oscillations in star networks of excitable elements in which peripheral nodes receive independent random inputs. A biophysical mo…
Noise-controlled bistability in an excitable system with positive feedback
Justus A. Kromer, Reynaldo D. Pinto, Benjamin Lindner +1
We study the interplay between noise and a positive feedback mechanism in an excitable system that generates events. We show that such a system can exhibit a bistability in the dyn…
Event-triggered feedback in noise-driven phase oscillators
Justus A. Kromer, Benjamin Lindner, Lutz Schimansky-Geier
Using a stochastic nonlinear phase oscillator model, we study the effect of event-triggered feedback on the statistics of interevent intervals. Events are associated with the enter…
Weighted-ensemble Brownian dynamics simulation: Sampling of rare events in non-equilibrium systems
Justus A. Kromer, Lutz Schimansky-Geier, Raul Toral
We provide an algorithm based on weighted-ensemble (WE) methods, to accurately sample systems at steady state. Applying our method to different one- and two-dimensional models, we…