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cond-mat.stat-mech2026
Microscopic theory of soft run-and-tumble particles
Rosalba Garcia-Millan, Ziluo Zhang, Luca Cocconi +4
Soft, repulsive run-and-tumble particles display emergent effective interactions as they appear to stick to each other in spite of the absence of attractive forces. This effective…
cond-mat.stat-mech2026
Effective attraction by repulsion
Rosalba Garcia-Millan, Luca Cocconi, Ziluo Zhang +4
Repulsive self-propelled particles tend to cluster, leading to Motility-Induced Phase Separation (MIPS). By analogy with equilibrium phase separation, the onset of MIPS has been as…
cond-mat.stat-mech2021
Field Theory of free Active Ornstein-Uhlenbeck Particles
Marius Bothe, Gunnar Pruessner
We derive a Doi-Peliti field theory for free active Ornstein-Uhlenbeck particles, or, equivalently, free inertial Brownian particles, and present a way to diagonalise the Gaussian…