A new class of critical solutions for 1D cubic NLS

Anatole Guérin (1, 2, 3, 4)

1 LJLL (UMR_7598) - Laboratoire Jacques-Louis Lions
2 LMO - Laboratoire de Mathématiques d'Orsay
3 Université Paris-Saclay
4 SU - Sorbonne Université

The aim of this article is to prove the existence of a new class of solutions of 1D cubic NLS with an initial data related to a sum of Dirac masses, of critical regularity F(L ∞), and belonging to Ḣs for any s < − 1/2. This problem is motivated by the lack of result for critical regularity initial condition, and also by the study of the vortex filaments dynamics approximated by the binormal flow. Our result is based on a scattering approach, after performing a pseudo-conformal transformation, and on fine estimations of oscillatory integrals.

Domaines: Equations aux dérivées partielles [math.AP]

Anatole Guérin. A new class of critical solutions for 1D cubic NLS. 2022. ⟨hal-03903971⟩