A. Kairzhan, D. Noja, and D.E. Pelinovsky

Standng waves on quantum graphs

J. Phys. A: Math. Theor. 55 (2022) 243001 (51pp)

Abstract:
We review evolutionary models on quantum graphs expressed by linear and nonlinear partial differential equations. Existence and stability of the standing waves trapped on quantum graphs are studied by using methods of the variational theory, dynamical systems on a phase plane, and the Dirichlet-to-Neumann mappings.

Keywords:
Quantum graphs; nonlinear Schrodinger equation; standing waves; variational technique; period function; Dirichlet-to-Neumann mappings; Morse index.