Large-data global well-posedness in the three-dimensional supercoulombic regime

Establish global well-posedness for arbitrary large initial data for the three-dimensional Vlasov equation with power-law interaction exponents in the supercoulombic range $2<\alpha\le3$.

Background

The paper proves large-data global well-posedness only in dimensions d4d\ge4 and for exponents 0<α<30<\alpha<3. It explains that the lower-dimensional regime d3d\le3, 0<αd0<\alpha\le d, is only partially understood. In dimension three, the classical Vlasov–Poisson theory covers the range up to the Coulomb exponent, while small-data results cover 2<α<32<\alpha<3; the remaining large-data supercoulombic regime is therefore identified as the principal unresolved case.

References

Together with the less singular theory, this leaves the supercoulombic range $d-1<\alpha\le d$ as the principal unresolved region.

Global well-posedness for Vlasov equations with power-law interactions in $d\ge4$  (2609.09512 - Katriadakis, 8 Sep 2026) in Section 1, subsection “Open problems”