Mean-field Evolution of Fermionic Mixed States
Mathematical Physics
2015-02-12 v2 math.MP
Abstract
In this paper we study the dynamics of fermionic mixed states in the mean-field regime. We consider initial states which are close to quasi-free states and prove that, under suitable assumptions on the inital data and on the many-body interaction, the quantum evolution of such initial data is well approximated by a suitable quasi-free state. In particular we prove that the evolution of the reduced one-particle density matrix converges, as the number of particles goes to infinity, to the solution of the time-dependent Hartree-Fock equation. Our result holds for all times, and gives effective estimates on the rate of convergence of the many-body dynamics towards the Hartree-Fock one.
Keywords
Cite
@article{arxiv.1411.0843,
title = {Mean-field Evolution of Fermionic Mixed States},
author = {Niels Benedikter and Vojkan Jaksic and Marcello Porta and Chiara Saffirio and Benjamin Schlein},
journal= {arXiv preprint arXiv:1411.0843},
year = {2015}
}
Comments
42 pages. Typos corrected, one appendix added (Appendix A)