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Multiple Normalized Solutions to a System of Nonlinear Schrödinger Equations
Stockholm University, Faculty of Science, Department of Mathematics.ORCID iD: 0000-0001-8797-4657
Number of Authors: 22025 (English)In: Journal of Geometric Analysis, ISSN 1050-6926, E-ISSN 1559-002X, Vol. 35, no 10, article id 312Article in journal (Refereed) Published
Abstract [en]

We find a normalized solution u=(u1,…,uK) to the system of K coupled nonlinear Schrödinger equations (Formula presented.) where ρ=(ρ1,…,ρK)∈(0,∞)K is prescribed, (λ,u)∈RK×H1(R3)K are the unknown and 4≤p<6. In the case of two equations we show the existence of multiple solutions provided that the coupling is sufficiently large. We also show that for negative coupling there are no ground state solutions. The main novelty in our approach is that we use the Cwikel-Lieb-Rozenblum theorem in order to estimate the Morse index of a solution as well as a Liouville-type result in an exterior domain.

Place, publisher, year, edition, pages
2025. Vol. 35, no 10, article id 312
Keywords [en]
Ground state, Nehari manifold, Normalized solution, Pohozaev manifold, System of nonlinear Schrödinger equations
National Category
Mathematical Analysis
Identifiers
URN: urn:nbn:se:su:diva-246655DOI: 10.1007/s12220-025-02127-9ISI: 001551652000002Scopus ID: 2-s2.0-105013187062OAI: oai:DiVA.org:su-246655DiVA, id: diva2:1996329
Available from: 2025-09-09 Created: 2025-09-09 Last updated: 2025-09-09Bibliographically approved

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Szulkin, Andrzej

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