Energy‐critical scattering for focusing inhomogeneous coupled Schrödinger systems

Author:

Ghanmi Radhia1,Saanouni Tarek2ORCID

Affiliation:

1. Faculty of Sciences of Tunis, LR03ES04 Partial Differential Equations and Applications University of Tunis El Manar Tunis Tunisia

2. Department of Mathematics, College of Science Qassim University Buraydah Kingdom of Saudi Arabia

Abstract

This work investigates the time asymptotics of the inhomogeneous coupled Schrödinger equations , where , and . Here, one treats the energy‐critical regime and . This is the index of the invariant Sobolev norm under the dilatation . To the authors knowledge, the technique used in order to prove the scattering of an energy global solution to the above problem in the sub‐critical regime is no more applicable for . In order to overcome this difficulty, one uses the Kenig–Merle road map. In order to avoid a singularity of the source term, one considers the case , which restricts the space dimensions to . Moreover, in order to use the Sobolev injection , one restricts the space dimensions to . Compared with the previous work for the first author (Inhomogeneous coupled non‐linear Schrödinger systems. J. Math. Phys. 62, 101508 (2021)), the method consisting on dividing the integrals in the unit ball and its complementary seems not sufficient to conclude in the present study because of the energy‐critical exponent. Instead, one uses some Caffarelli–Kohn–Nirenberg weighted type inequalities.

Publisher

Wiley

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