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math.PR2026

Comparison inequalities for discrete- and continuous-time infection processes

Benedikt Jahnel, Jonas Köppl, Pēteris Siliņš

We study comparison inequalities for contact-process-type infection dynamics on with general local transmission mechanisms. The processes considered include both disc…

math.PR2026

On the stationary measures of the critical Ornstein--Uhlenbeck process

Jean-Dominique Deuschel, Jonas Köppl, Yannic Steenbeck +1

We study linear and symmetric diffusion processes on that can be seen as the Langevin dynamics of the (inhomogeneous) harmonic crystal for given conduct…

math.PR2026

Asymptotically complete free-energy dissipation: a coarse MLSI holds at any positive temperature

Jonas Köppl, Yannic Steenbeck

Everybody learns in school that an out-of-equilibrium system coupled to a heat bath at a fixed temperature evolves to thermodynamic equilibrium as time goes on, and the free energy…

math.PR2024

The variational principle for a marked Gibbs point process with infinite-range multibody interactions

Benedikt Jahnel, Jonas Köppl, Yannic Steenbeck +1

We prove the Gibbs variational principle for the Asakura--Oosawa model in which particles of random size obey a hardcore constraint of non-overlap and are additionally subject to a…

math.PR2024

Survival and extinction for a contact process with a density-dependent birth rate

Jonas Köppl, Nicolas Lanchier, Max Mercer

To study later spatial evolutionary games based on the multitype contact process, we first focus in this paper on the conditions for survival/extinction in the presence of only one…

math.PR2024

Time-periodic behaviour in one- and two-dimensional interacting particle systems

Jonas Köppl, Benedikt Jahnel

We provide a class of examples of interacting particle systems on , for , that admit a unique translation-invariant stationary measure, which is not the…