TY  - JOUR
A1  - Yochelis, Arik
A1  - Beta, Carsten
A1  - Gov, Nir S.
T1  - Excitable solitons
T2  - Physical review : E, Statistical, nonlinear and soft matter physics
N2  - Excitable pulses are among the most widespread dynamical patterns that occur in many different systems, ranging from biological cells to chemical reactions and ecological populations. Traditionally, the mutual annihilation of two colliding pulses is regarded as their prototypical signature. Here we show that colliding excitable pulses may exhibit solitonlike crossover and pulse nucleation if the system obeys a mass conservation constraint. In contrast to previous observations in systems without mass conservation, these alternative collision scenarios are robustly observed over a wide range of parameters. We demonstrate our findings using a model of intracellular actin waves since, on time scales of wave propagations over the cell scale, cells obey conservation of actin monomers. The results provide a key concept to understand the ubiquitous occurrence of actin waves in cells, suggesting why they are so common, and why their dynamics is robust and long-lived.
Y1  - 2020
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/60282
SN  - 2470-0045
SN  - 2470-0053
VL  - 101
IS  - 2
PB  - American Physical Society
CY  - Melville, NY
ER  -