Nonlinear Schrödinger equation on graphs: recent results and open problems

D Noja - Philosophical Transactions of the Royal Society …, 2014 - royalsocietypublishing.org
In this paper, an introduction to the new subject of nonlinear dispersive Hamiltonian
equations on graphs is given. The focus is on recently established properties of solutions in …

Statistics of Gaussian packets on metric and decorated graphs

VL Chernyshev, AI Shafarevich - … Transactions of the …, 2014 - royalsocietypublishing.org
We study a semiclassical asymptotics of the Cauchy problem for a time-dependent
Schrödinger equation on metric and decorated graphs with a localized initial function. A …

NLS ground states on graphs

R Adami, E Serra, P Tilli - Calculus of Variations and Partial Differential …, 2015 - Springer
We investigate the existence of ground states for the subcritical NLS energy on metric
graphs. In particular, we find out a topological assumption that guarantees the nonexistence …

Negative Energy Ground States for the L 2-Critical NLSE on Metric Graphs

R Adami, E Serra, P Tilli - Communications in Mathematical Physics, 2017 - Springer
We investigate the existence of ground states with prescribed mass for the focusing
nonlinear Schrödinger equation with L 2-critical power nonlinearity on noncompact quantum …

[HTML][HTML] Threshold phenomena and existence results for NLS ground states on metric graphs

R Adami, E Serra, P Tilli - Journal of Functional Analysis, 2016 - Elsevier
We investigate the existence of ground states of prescribed mass, for the nonlinear
Schrödinger energy on a noncompact metric graph G. While in some cases the topology of …

Standing waves on quantum graphs

A Kairzhan, D Noja, DE Pelinovsky - Journal of Physics A …, 2022 - iopscience.iop.org
We review evolutionary models on quantum graphs expressed by linear and nonlinear
partial differential equations. Existence and stability of the standing waves trapped on …

[HTML][HTML] Variational properties and orbital stability of standing waves for NLS equation on a star graph

R Adami, C Cacciapuoti, D Finco, D Noja - Journal of Differential Equations, 2014 - Elsevier
We study standing waves for a nonlinear Schrödinger equation on a star graph G, ie N
halflines joined at a vertex. At the vertex an interaction occurs described by a boundary …

[HTML][HTML] Stable standing waves for a NLS on star graphs as local minimizers of the constrained energy

R Adami, C Cacciapuoti, D Finco, D Noja - Journal of Differential Equations, 2016 - Elsevier
On a star graph made of N≥ 3 halflines (edges) we consider a Schrödinger equation with a
subcritical power-type nonlinearity and an attractive delta interaction located at the vertex …

Constrained energy minimization and orbital stability for the NLS equation on a star graph

R Adami, D Noja, C Cacciapuoti, D Finco - … de l'Institut Henri Poincaré C, 2014 - ems.press
On a star graph G, we consider a nonlinear Schrödinger equation with focusing nonlinearity
of power type and an attractive Dirac's delta potential located at the vertex. The equation can …

Ground state and orbital stability for the NLS equation on a general starlike graph with potentials

C Cacciapuoti, D Finco, D Noja - Nonlinearity, 2017 - iopscience.iop.org
We consider a nonlinear Schrödinger equation (NLS) posed on a graph (or network)
composed of a generic compact part to which a finite number of half-lines are attached. We …