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Stability of homogeneous equilibria of the Hartree–Fock equation for its equivalent formulation for random fields

Charles Collot, Elena Danesi, Anne-Sophie de Suzzoni and Cyril Malézé

Vol. 6 (2025), No. 1, 241–279
Abstract

The Hartree–Fock equation admits homogeneous states that model infinitely many particles at equilibrium. We prove their asymptotic stability in large dimensions, under assumptions on the linearised operator. Perturbations are moreover showed to scatter to linear waves. We obtain this result for the equivalent formulation of the Hartree–Fock equation in the framework of random fields. The main novelty is to study the full Hartree–Fock equation, including for the first time the exchange term in the study of these stationary solutions.

Keywords
Hartree–Fock, PDEs, dispersive equation, scattering
Mathematical Subject Classification
Primary: 35B20, 35B35, 35Q40
Milestones
Received: 5 October 2023
Accepted: 10 October 2024
Published: 23 February 2025
Authors
Charles Collot
Laboratoire Analyse, Géométrie et Modélisation
CY Cergy Paris Université
Pontoise
France
Elena Danesi
Dipartimento di Scienze Matematiche “G. L. Lagrange”
Politecnico di Torino
Torino
Italy
Anne-Sophie de Suzzoni
Centre de Mathématiques Laurent Schwartz
École Polytechnique
CNRS, Universitè Paris-Saclay
Palaiseau
France
Cyril Malézé
Centre de Mathématiques Laurent Schwartz
École Polytechnique
CNRS, Universitè Paris-Saclay
Palaiseau
France