English

Derivation of Vlasov equations for multi-species fermions

Mathematical Physics 2025-07-25 v2 math.MP

Abstract

We explore a system of two-species fermions with NN particles. Through this exploration, we establish a two-species Husimi measure and construct a two-species Bogoliubov-Born-Green-Kirkwood-Yvon (BBGKY) hierarchy with error terms. We provide proofs of the smallness of these errors in the semiclassical and mean-field limits, fixing =N1/3\hbar = N^{-1/3}. After that, we rigorously establish the uniqueness of this hierarchy. This allows us to conclude that the two-species Husimi measure from the solution of the NN-particle Schr\"odinger equation approximates the solution of the Vlasov equation for two-species systems.

Keywords

Cite

@article{arxiv.2312.01075,
  title  = {Derivation of Vlasov equations for multi-species fermions},
  author = {Hongshuo Chen and Li Chen and Jinyeop Lee and Zhiwei Sun},
  journal= {arXiv preprint arXiv:2312.01075},
  year   = {2025}
}