73 citations · 491 across the 32 of their papers we have counts for
20 papers · 1 filter
On shallow water non-convex dispersive hydrodynamics: the extended KdV model
Saleh Baqer, Theodoros P. Horikis, Dimitrios J. Frantzeskakis
In this work, we investigate non-classical wavetrain formations, and particularly dispersive shock waves (DSWs), or undular bores, in systems exhibiting non-convex dispersion. Our…
Nonlinear instability and solitons in a self-gravitating fluid
G. N. Koutsokostas, S. Sypsas, O. Evnin +2
We study a spherical, self-gravitating fluid model, which finds applications in cosmic structure formation. We argue that since the system features nonlinearity and gravity-induced…
Nematic dispersive shock waves from nonlocal to local
Saleh Baqer, Dimitrios J. Frantzeskakis, Theodoros Horikis +3
The structure of optical dispersive shock waves in nematic liquid crystals is investigated as the power of the optical beam is varied, with six regimes identified, which complement…
Dark solitons in a trapped gas of long-range interacting bosons
M. Beau, A. del Campo, D. J. Frantzeskakis +2
We consider the interplay of repulsive short-range and same-sign long-range interactions in the dynamics of dark solitons, as prototypical coherent nonlinear excitations in a trapp…
Transverse instability and dynamics of nonlocal bright solitons
G. N. Koutsokostas, G. Theocharis, T. P. Horikis +2
We study the transverse instability and dynamics of bright soliton stripes in two-dimensional nonlocal nonlinear media. Using a multiscale perturbation method, we derive analytical…
Universal reductions and solitary waves of weakly nonlocal defocusing nonlinear Schrödinger equations
G. N. Koutsokostas, T. P. Horikis, P. G. Kevrekidis +1
We study asymptotic reductions and solitary waves of a weakly nonlocal defocusing nonlinear Schrödinger (NLS) model. The hydrodynamic form of the latter is analyzed by means of mul…