628 citations · 8.2k across the 197 of their papers we have counts for
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PT-symmetric lattices with spatially extended gain/loss are generically unstable
D. E. Pelinovsky, P. G. Kevrekidis, D. J. Frantzeskakis
We illustrate, through a series of prototypical examples, that linear parity-time (PT) symmetric lattices with extended gain/loss profiles are generically unstable, for any non-zer…
Matter-wave bright solitons in spin-orbit coupled Bose-Einstein condensates
V. Achilleos, D. J. Frantzeskakis, P. G. Kevrekidis +1
We study matter-wave bright solitons in spin-orbit (SO) coupled Bose-Einstein condensates (BECs) with attractive interatomic interactions. We use a multiscale expansion method to i…
Scattering of atomic dark-bright solitons from narrow impurities
A. Álvarez, J. Cuevas, F. R. Romero +5
In this work, we study the collision of an atomic dark-bright soliton, in a two-component Bose-Einstein condensate, with a Gaussian barrier or well. First, we present the results o…
Solitons and their ghosts in PT-symmetric systems with defocusing nonlinearities
V. Achilleos, P. G. Kevrekidis, D. J. Frantzeskakis +1
We examine a prototypical nonlinear Schrödinger model bearing a defocusing nonlinearity and Parity-Time (PT) symmetry. For such a model, the solutions can be identified numerically…
PT-symmetric Double Well Potentials Revisited: Bifurcations, Stability and Dynamics
A. S. Rodrigues, K. Li, V. Achilleos +3
In this work we analyze PT-symmetric double-well potentials based on a two-mode picture. We reduce the problem into a PT-symmetric dimer and illustrate that the latter has effectiv…
Finite-temperature dynamics of matter-wave dark solitons in linear and periodic potentials: an example of an anti-damped Josephson junction
Y. Shen, P. G. Kevrekidis, N. Whitaker +2
We study matter-wave dark solitons in atomic Bose-Einstein condensates at finite temperatures, under the effect of linear and periodic potentials. Our model, namely a dissipative G…