37 citations · 70 across the 7 of their papers we have counts for
7 papers
Two-dimensional solitons in extended GPE models with Lee-Huang-Yang corrections
G. N. Koutsokostas, F. Bristy, E. C. Psychogiou +5
We investigate the existence and dynamics of two-dimensional solitary waves in a quantum droplet environment described by the extended Gross-Pitaevskii equation featuring logarithm…
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…
Solitary waves in a quantum droplet-bearing system
G. C. Katsimiga, S. I. Mistakidis, G. N. Koutsokostas +3
We unravel the existence and stability properties of dark soliton solutions as they extend from the regime of trapped quantum droplets towards the Thomas-Fermi limit in homonuclear…
Stationary solitons in F=1 spin-orbit coupled Bose-Einstein condensates
T. Mithun, A. R. Fritsch, G. N. Koutsokostas +3
We consider solitary wave excitations above the ground state of spin-orbit coupled Bose-Einstein condensates (SOBECs). The low energy properties of SOBECs in any of the three…
Kink-antikink stripe interactions in the two-dimensional sine-Gordon equation
R. Carretero-Gonzalez, L. A. Cisneros-Ake, R. Decker +4
The main focus of the present work is to study quasi-one-dimensional kink-antikink stripes embedded in the two-dimensional sine-Gordon equation. Using variational techniques, we re…
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…