Interactions and scattering of quantum vortices in a polariton fluid

Autor: Lorenzo Dominici, Ricardo Carretero-González, Antonio Gianfrate, Jesús Cuevas-Maraver, Augusto S. Rodrigues, Dimitri J. Frantzeskakis, Giovanni Lerario, Dario Ballarini, Milena De Giorgi, Giuseppe Gigli, Panayotis G. Kevrekidis, Daniele Sanvitto

Publikováno v: Nature Communications, Vol 9, Iss 1, Pp 1-10 (2018)

Superfluid flow around a vortex is quantized so that vortices become discrete, particle-like defects, with interactions mediated by the surrounding fluid. Here, the authors use a polariton system to experimentally investigate the behavior and scatter

Externí odkaz: https://doaj.org/article/157da01fadae4e65b9b076290da79710

Peregrine solitons and gradient catastrophes in discrete nonlinear Schrödinger systems

Autor: Panos Kevrekidis, C. Hoffmann, Dimitri J. Frantzeskakis, Efstathios G. Charalampidis

Publikováno v: Physics Letters A. 382:3064-3070

In the present work, we examine the potential robustness of extreme wave events associated with large amplitude fluctuations of the Peregrine soliton type, upon departure from the integrable analogue of the discrete nonlinear Schrodinger (DNLS) equat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0e6a6491b72824511997537fd9792e01
https://doi.org/10.1016/j.physleta.2018.08.014

Self-similar evolution in nonlocal nonlinear media

Autor: Nalan Antar, Theodoros P. Horikis, Dimitri J. Frantzeskakis, İlkay Bakırtaş, Noel F. Smyth

Publikováno v: Horikis, T, Frantzeskakis, D, Antar, N, Bakirtas, I & Smyth, N 2019, ' Self-similar evolution in nonlocal nonlinear media ', Optics Letters, vol. 44, no. 15, pp. 3701-3704 . https://doi.org/10.1364/OL.44.003701

The self-similar propagation of optical beams in a broadclass of nonlocal, nonlinear optical media is studied utiliz-ing a generic system of coupled equations with linear gain.This system describes, for instance, beam propagation innematic liquid cry

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::460334af112202363056b555a6750adf
https://hdl.handle.net/20.500.11820/db60d7a4-a3ca-4a8a-b254-d97b2dedc2c1

Breather stripes and radial breathers of the two-dimensional sine-Gordon equation

Autor: Ricardo Carretero-González, Panayotis G. Kevrekidis, Dimitri J. Frantzeskakis, J. G. Caputo, Jesús Cuevas-Maraver, Boris A. Malomed

Publikováno v: Communications in Nonlinear Science and Numerical Simulation. 94:105596

We revisit the problem of transverse instability of a 2D breather stripe of the sine-Gordon (sG) equation. A numerically computed Floquet spectrum of the stripe is compared to analytical predictions developed by means of multiple-scale perturbation t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e64944f9b6c19e710a3da47909e529c
https://doi.org/10.1016/j.cnsns.2020.105596

Collapse for the higher-order nonlinear Schrödinger equation

Autor: Dimitri J. Frantzeskakis, S. Diamantidis, Nikos I. Karachalios, Vassos Achilleos, Theodoros P. Horikis, Panayotis G. Kevrekidis

Publikováno v: Physica D: Nonlinear Phenomena. 316:57-68

We examine conditions for finite-time collapse of the solutions of the higher-order nonlinear Schrodinger (NLS) equation incorporating third-order dispersion, self-steepening, linear and nonlinear gain and loss, and Raman scattering; this is a system

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3184e865d19082cd9a5e0083d064ca66
https://doi.org/10.1016/j.physd.2015.11.005