Published Paper
Inserted: 7 jul 2022
Last Updated: 7 jul 2022
Journal: Oper. Theory Adv. Appl.
Volume: 281
Pages: 113-125
Year: 2020
Doi: 10.1007/978-3-030-44097-8_5
Volume "Discrete and Continuous Models in the Theory of Networks".
Abstract:
The paper aims at giving a first insight on the existencenonexistence of ground states for the $L^2$-critical NLS equation on metric graphs with localized nonlinearity. In particular, we focus on the tadpole graph, which, albeit being a toy model, allows to point out some specific features of the problem, whose understanding will be useful for future investigations.