Zobrazeno 1 - 10
of 167
pro vyhledávání: '"P G Kevrekidis"'
Publikováno v:
New Journal of Physics, Vol 23, Iss 1, p 013015 (2021)
We present the phase diagram, the underlying stability and magnetic properties as well as the dynamics of nonlinear solitary wave excitations arising in the distinct phases of a harmonically confined spinor F = 1 Bose–Einstein condensate. Particula
Externí odkaz:
https://doaj.org/article/51fe068307cf40c2bfe5435437327d2c
Data-driven discovery of chemotactic migration of bacteria via coordinate-invariant machine learning
Autor:
Yorgos M. Psarellis, Seungjoon Lee, Tapomoy Bhattacharjee, Sujit S. Datta, Juan M. Bello-Rivas, Ioannis G. Kevrekidis
Publikováno v:
BMC Bioinformatics, Vol 25, Iss 1, Pp 1-22 (2024)
Abstract Background E. coli chemotactic motion in the presence of a chemonutrient field can be studied using wet laboratory experiments or macroscale-level partial differential equations (PDEs) (among others). Bridging experimental measurements and c
Externí odkaz:
https://doaj.org/article/d33dc8deb1b44d6584404be74c6d662a
Publikováno v:
New Journal of Physics, Vol 21, Iss 6, p 063032 (2019)
We study—experimentally, theoretically, and numerically—nonlinear excitations in lattices of magnets with long-range interactions. We examine breather solutions, which are spatially localized and periodic in time, in a chain with algebraically-de
Externí odkaz:
https://doaj.org/article/8b89d079aecf47309ade12703dea146e
Publikováno v:
Frontiers in Photonics, Vol 5 (2024)
IntroductionThe moment quantities associated with the nonlinear Schrödinger equation offer important insights into the evolution dynamics of such dispersive wave partial differential equation (PDE) models. The effective dynamics of the moment quanti
Externí odkaz:
https://doaj.org/article/23b3f5a8845e4fd8a9b3ae80d79b3f74
Autor:
Tassos Bountis, Julia Cantisán, Jesús Cuevas-Maraver, J.E. Macías-Díaz, Panayotis G. Kevrekidis
Publikováno v:
Partial Differential Equations in Applied Mathematics, Vol 11, Iss , Pp 100807- (2024)
In honor of the great Russian mathematician A. N. Kolmogorov, we would like to draw attention in the present paper to a curious mathematical observation concerning fractional differential equations describing physical systems, whose time evolution fo
Externí odkaz:
https://doaj.org/article/fa27733e235f4fe6b585df4d0e77ef48
Publikováno v:
New Journal of Physics, Vol 20, Iss 4, p 043052 (2018)
We explore the quench dynamics of a binary Bose–Einstein condensate crossing the miscibility–immiscibility threshold and vice versa, both within and in particular beyond the mean-field approximation. Increasing the interspecies repulsion leads to
Externí odkaz:
https://doaj.org/article/adf315188df04d30849b043837e11f23
Autor:
Gaurav Deshmukh, Noah J. Wichrowski, Nikolaos Evangelou, Pushkar G. Ghanekar, Siddharth Deshpande, Ioannis G. Kevrekidis, Jeffrey Greeley
Publikováno v:
npj Computational Materials, Vol 10, Iss 1, Pp 1-11 (2024)
Abstract Machine learning models with uncertainty quantification have recently emerged as attractive tools to accelerate the navigation of catalyst design spaces in a data-efficient manner. Here, we combine active learning with a dropout graph convol
Externí odkaz:
https://doaj.org/article/0ca011206129467fb1de112452a4a9a2
Autor:
Sean M. Mossman, Garyfallia C. Katsimiga, Simeon I. Mistakidis, Alejandro Romero-Ros, Thomas M. Bersano, Peter Schmelcher, Panayotis G. Kevrekidis, Peter Engels
Publikováno v:
Communications Physics, Vol 7, Iss 1, Pp 1-5 (2024)
Abstract Solitons are nonlinear solitary waves which maintain their shape over time and through collisions, occurring in a variety of nonlinear media from plasmas to optics. We present an experimental and theoretical study of hydrodynamic phenomena i
Externí odkaz:
https://doaj.org/article/3c4f8099315743adb323465b1d61e7f6
Autor:
Gianluca Fabiani, Nikolaos Evangelou, Tianqi Cui, Juan M. Bello-Rivas, Cristina P. Martin-Linares, Constantinos Siettos, Ioannis G. Kevrekidis
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-13 (2024)
Abstract We present a machine learning framework bridging manifold learning, neural networks, Gaussian processes, and Equation-Free multiscale approach, for the construction of different types of effective reduced order models from detailed agent-bas
Externí odkaz:
https://doaj.org/article/5fb6f60dad5849f5816daaf080045708
Publikováno v:
New Journal of Physics, Vol 19, Iss 12, p 123012 (2017)
The beyond mean-field (MF) dynamics of a bent dark soliton (BDS) embedded in a two-dimensional repulsively interacting Bose–Einstein condensate is explored. We examine the case of a single BDS comparing the MF dynamics to a correlated approach, the
Externí odkaz:
https://doaj.org/article/8d42a64b3b5f40e89a73c06d86ed6bec