Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Koutsokostas, G. N."'
We study nonlocal bright solitons subject to external spatially nonuniform potentials. If the potential is slowly varying on the soliton scale, we derive analytical soliton solutions behaving like Newtonian particles. If the potential has the form of
Externí odkaz:
http://arxiv.org/abs/2407.05797
Publikováno v:
Math. Meth. Appl. Sci. (2024), 1-17
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 dispersion, the emergence of solitons becomes possible. We thus emplo
Externí odkaz:
http://arxiv.org/abs/2312.16577
Autor:
Katsimiga, G. C., Mistakidis, S. I., Koutsokostas, G. N., Frantzeskakis, D. J., Carretero-Gonzalez, R., Kevrekidis, P. G.
Publikováno v:
Phys. Rev. A 107, 063308 (2023)
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 symmetric Bose mixtures. Leveraging a phase-plane analysis, we identi
Externí odkaz:
http://arxiv.org/abs/2302.07767
Autor:
Mithun, T., Fritsch, A. R., Koutsokostas, G. N., Frantzeskakis, D. J., Spielman, I. B., Kevrekidis, P. G.
Publikováno v:
Phys. Rev. A 109, 023328 (2024)
We consider solitary wave excitations above the ground state of $F=1$ spin-orbit coupled Bose-Einstein condensates (SOBECs). The low energy properties of SOBECs in any of the three branches of the single particle dispersion relation can be described
Externí odkaz:
http://arxiv.org/abs/2212.12966
Autor:
Carretero-Gonzalez, R., Cisneros-Ake, L. A., Decker, R., Koutsokostas, G. N., Frantzeskakis, D. J., Kevrekidis, P. G., Ratliff, D. J.
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 reduce the interaction dynamics between a kink and an antikink stripe on
Externí odkaz:
http://arxiv.org/abs/2108.03121
We study the transverse instability and dynamics of bright soliton stripes in two-dimensional nonlocal nonlinear media. Using a multiscale perturbation method, we derive analytically the first-order correction to the soliton shape, which features an
Externí odkaz:
http://arxiv.org/abs/2105.09170
We study asymptotic reductions and solitary waves of a weakly nonlocal defocusing nonlinear Schr\"odinger (NLS) model. The hydrodynamic form of the latter is analyzed by means of multiscale expansion methods. To the leading-order of approximation (wh
Externí odkaz:
http://arxiv.org/abs/2011.09651
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Akademický článek
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Autor:
Mithun, T., Fritsch, A. R., Koutsokostas, G. N., Frantzeskakis, D. J., Spielman, I. B., Kevrekidis, P. G.
We consider solitonic excitations above the ground state of $F=1$ spin orbit coupled Bose-Einstein condensates (SOBECs). The low energy properties of SOBECs in any of the three branches of the single particle dispersion relation can be described by s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9809442d268e9ec2cbb2c6184922e5e