activity
20192026
most citedQuantitative Rates of Convergence to Non-Equilibrium Steady State for a Weakly Anharmonic Chain of Oscillators

8 citations · 16 across the 14 of their papers we have counts for

collaborators

15 papers

math-ph2026

Spectral gaps for mean-field Coulomb gases

Simon Becker, Angeliki Menegaki

We prove a Poincaré inequality, uniform in the particle number, for repulsive (one-component) Coulomb gases in dimensions , with inverse temperature that is allowed to…

math.AP2026

Global Well-Posedness near Rayleigh-Jeans Equilibria for the Cubic NLS Wave Kinetic Equation

Miguel Escobedo, Angeliki Menegaki

We study the dynamics of the kinetic wave equation associated to the three dimensional Schrödinger equation close to Rayleigh-Jeans equilibria. We first prove that the linearised o…

math-ph2026

A review on the kinetic theory of oscillator chains

Pierre Germain, Joonhyun La, Angeliki Menegaki

We review the kinetic theory of one-dimensional nonlinear oscillator chains, of which the most famous example is the Fermi-Pasta-Ulam-Tsingou equation. We provide detailed, though…

math.PR2024

A consistency-stability approach to scaling limits of zero-range processes

Daniel Marahrens, Angeliki Menegaki, Clément Mouhot

We propose a simple quantitative method for studying the hydrodynamic limit of interacting particle systems on lattices. It is applied to the diffusive scaling of the symmetric Zer…

math.AP2024

Entropy maximizers for kinetic wave equations set on tori

Miguel Escobedo, Pierre Germain, Joonhyun La +1

We consider the kinetic wave equation, or phonon Boltzmann equation, set on the torus (physical system set on the lattice). We describe entropy maximizers for fixed mass and energy…

math.AP2024

Stability of Rayleigh-Jeans equilibria in the kinetic FPU equation

Pierre Germain, Joonhyun La, Angeliki Menegaki

We study the nonlinear dynamics of the kinetic wave equation associated to the FPU problem and prove stability of the non-singular Rayleigh-Jeans equilibria. The lack of a spectral…

math.AP2024

Instability of singular equilibria of a wave kinetic equation

Miguel Escobedo, Angeliki Menegaki

We consider the singular Rayleigh-Jeans equilibrium of the -waves kinetic turbulence equation for the three dimensional Schrödinger equation. We first show the formation in fini…

math-ph2023

Spectral analysis and phase transitions for long-range interactions in harmonic chains of oscillators

Simon Becker, Angeliki Menegaki, Jiming Yu

We consider chains of harmonic oscillators in two dimensions coupled to two Langevin heat reservoirs at different temperatures - a classical model for heat conduction introduce…

math.AP2023

Properties of Non-Equilibrium Steady States for the non-linear BGK equation on the torus

Josephine Evans, Angeliki Menegaki

We study the non-linear BGK model in 1d coupled to a spatially varying thermostat. We show existence, local uniqueness and linear stability of a steady state when the linear coupli…

math.AP2022★ 1 cited

-stability near equilibrium for the waves kinetic equation

Angeliki Menegaki

We consider the four waves spatial homogeneous kinetic equation arising in wave turbulence theory. We study the long-time behaviour and existence of solutions around the Rayleigh-J…

math.AP2022

Global smooth solutions for triangular reaction-cross diffusion systems

Jessica Guerand, Angeliki Menegaki, Ariane Trescases

For a class of reaction cross-diffusion systems of two equations with a cross-diffusion term in the first equation and with self-diffusion terms, we prove that the unique local smo…

math-ph2020

The optimal spectral gap for regular and disordered harmonic networks of oscillators

Simon Becker, Angeliki Menegaki

We consider one-dimensional chains and multi-dimensional networks of harmonic oscillators coupled to two Langevin heat reservoirs at different temperatures. Each particle interacts…

math.AP2020★ 3 cited

Existence of a Non-Equilibrium Steady State for the Non-linear BGK equation on an interval

Josephine Evans, Angeliki Menegaki

We show existence of a non-equilibrium steady state for the one-dimensional, non-linear BGK model on an interval with diffusive boundary conditions. These boundary conditions repre…

math-ph2019★ 8 cited

Quantitative Rates of Convergence to Non-Equilibrium Steady State for a Weakly Anharmonic Chain of Oscillators

Angeliki Menegaki

We study a -dimensional chain of weakly anharmonic classical oscillators coupled at its ends to heat baths at different temperatures. Each oscillator is subject to pinning p…

math-ph2019★ 4 cited

Spectral gap in mean-field -model

Simon Becker, Angeliki Menegaki

We study the dependence of the spectral gap for the generator of the Ginzburg-Landau dynamics for all \emph{-models} with mean-field interaction and magnetic field,…