A perturbation expansion in interaction couplings yields effective interaction vertices for soft run-and-tumble particles, enabling exact calculation of the two-point correlation function and other stationary-state observables.
Peliti, Path integral approach to birth-death processes on a lattice, J
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In a minimal model of two repulsive self-propelled particles, effective attraction emerges only as a higher-order correction to the renormalized pair potential while the leading term remains repulsive.
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Microscopic theory of soft run-and-tumble particles
A perturbation expansion in interaction couplings yields effective interaction vertices for soft run-and-tumble particles, enabling exact calculation of the two-point correlation function and other stationary-state observables.
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Effective attraction by repulsion
In a minimal model of two repulsive self-propelled particles, effective attraction emerges only as a higher-order correction to the renormalized pair potential while the leading term remains repulsive.