Zobrazeno 1 - 10
of 394
pro vyhledávání: '"CATES, MICHAEL E."'
Autor:
O'Byrne, Jérémy, Cates, Michael E.
In this article, we study the time-reversal properties of a generic Markovian stochastic field dynamics with Gaussian noise. We introduce a convenient functional geometric formalism that allows us to straightforwardly generalize known results from fi
Externí odkaz:
http://arxiv.org/abs/2411.19299
Publikováno v:
Phys. Rev. E 110, L042103 (2024)
In phase-separated active fluids, the Ostwald process can go into reverse leading to either microphase separation or bubbly phase separation. We show that the latter is formed of two macroscopic regions that are occupied by the homogeneous fluid and
Externí odkaz:
http://arxiv.org/abs/2410.18770
To establish general principles of optimal control of active matter, we study the elementary problem of moving an active particle by a trap with minimum work input. We show analytically that (open-loop) optimal protocols are not affected by activity,
Externí odkaz:
http://arxiv.org/abs/2407.18542
Publikováno v:
J. Phys.: Condens. Matter 36 (2024) 405101
Hyperuniformity emerges generically in the coarsening regime of phase-separating fluids. Numerical studies of active and passive systems have shown that the structure factor $S(q)$ behaves as $q^\varsigma$ for $q\to 0$, with hyperuniformity exponent
Externí odkaz:
http://arxiv.org/abs/2405.00508
We study the effect of phase separating diffusive dynamics on the mean time to extinction in several reaction-diffusion models with slow reactions. We consider a continuum theory similar to model AB, and a simple model where individual particles on t
Externí odkaz:
http://arxiv.org/abs/2404.07563
Autor:
O'Byrne, Jérémy, Cates, Michael E.
In this article, we analyze three classes of time-reversal of a Markov process with Gaussian noise on a manifold. We first unveil a commutativity constraint for the most general of these time-reversals to be well defined. Then we give a triad of nece
Externí odkaz:
http://arxiv.org/abs/2402.04217
Autor:
Thorneywork, Alice L., Gladrow, Jannes, Keyser, Ulrich F., Cates, Michael E., Adhikari, Ronojoy, Kappler, Julian
Recent experiments have probed the relative likelihoods of trajectories in stochastic systems by observing survival probabilities within a tube of radius $R$ in spacetime. We measure such probabilities here for a colloidal particle in a corrugated ch
Externí odkaz:
http://arxiv.org/abs/2402.01559
Publikováno v:
New J. Phys. 26, 063006 (2024)
We introduce a family of lattice-gas models of flocking, whose thermodynamically consistent dynamics admits a proper equilibrium limit at vanishing self-propulsion. These models are amenable to an exact coarse-graining which allows us to study their
Externí odkaz:
http://arxiv.org/abs/2401.09901
Hyperuniformity, whereby the static structure factor (or density correlator) obeys $S(q)\sim q^{\varsigma}$ with $\varsigma> 0$, emerges at criticality in systems having multiple absorbing states, such as periodically sheared suspensions. These lie i
Externí odkaz:
http://arxiv.org/abs/2310.17391
Publikováno v:
Eur. Phys. J. E 46, 103 (2023)
Using an approach based on Doi-Peliti field theory, we study several different Active Ising Models (AIMs), in each of which collective motion (flocking) of self-propelled particles arises from the spontaneous breaking of a discrete symmetry. We test
Externí odkaz:
http://arxiv.org/abs/2306.10791