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most citedFaster Hamiltonian Monte Carlo by Learning Leapfrog Scale: a self-calibrated randomized solution

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math.PR2026

Exponential Tail Estimates for Multitype Poisson Branching Processes and Application to Hawkes Processes

Théo Leblanc

We establish exponential moment bounds for linear functionals of the total progeny of multitype Poisson Bienaymé-Galton-Watson trees. Our estimates are explicitly characterized in…

math.PR2026

On the spectral radius of the ratio of Girko matrices

Djalil Chafaï, David García-Zelada, Yuan Yuan Xu

Girko matrices have independent and identically distributed entries of mean zero and unit variance. In this note, we consider the random matrix model formed by the ratio of two ind…

math.PR2026

Regularization of a mean-field SDE by an additive common noise: The conditional expectation case

Pierre Cardaliaguet, Benjamin Jourdain

We investigate a McKean-Vlasov stochastic differential equation with an additive common noise and in which the interaction is through the conditional expectation. We show that, in…

math.PR2026

Hawkes autoregressive processes: a new model for multiscale and heterogeneous processes

Théo Leblanc

Both Hawkes processes and autoregressive processes rely on linear functionals of their past, while modeling different types of data. Since datasets arising from observations of the…

math.PR2026

Nonlinear fluctuations for a chain of weakly anharmonic oscillators with stochastic perturbation

Kohei Hayashi, Stefano Olla

We study the fluctuations of the phonon modes in a one-dimensional chain of anharmonic oscillators where the deterministic Hamiltonian dynamics is perturbed by random exchanges of…

math.PR2026

Zero noise limit for singular ODE regularized by fractional noise

Łukasz MÄ dry, Paul Gassiat

We consider scalar ODE with a power singularity at the origin, regularized by an additive fractional noise. We show that, as the intensity in front of the noise goes to , the so…