A. Chernyavsky

activity

20162026

most citedLong-time stability of breathers in Hamiltonian

P T

-symmetric lattices

12 citations · 49 across the 11 of their papers we have counts for

collaborators

Showing 2017Show all

2 papers · 1 filter

nlin.PS2017

Krein Signature in Hamiltonian and $P T$ -symmetric Systems

A. Chernyavsky, P. G. Kevrekidis, D. E. Pelinovsky

We explain the concept of Krein signature in Hamiltonian and $P T$ -symmetric systems on the case study of the one-dimensional Gross-Pitaevskii equation with a real harmoni…

math-ph2017★ 4 cited

Krein signature for instability of $P T$ -symmetric states

Alexander Chernyavsky, Dmitry E. Pelinovsky

Krein quantity is introduced for isolated neutrally stable eigenvalues associated with the stationary states in the $P T$ -symmetric nonlinear Schrödinger equation. Krein q…

Krein Signature in Hamiltonian and PT-symmetric Systems

Krein signature for instability of PT-symmetric states

Krein Signature in Hamiltonian and $P T$ -symmetric Systems

Krein signature for instability of $P T$ -symmetric states