Zobrazeno 1 - 10
of 1 089
pro vyhledávání: '"P. Foldès"'
The properties of energy transfer in the kinetic range of plasma turbulence have fundamental implications on the turbulent heating of space and astrophysical plasmas. It was recently suggested that magnetic reconnection may be responsible for driving
Externí odkaz:
http://arxiv.org/abs/2408.02505
Autor:
Foldes, Juraj, Stacy, Declan
We study the stability of $\mathcal{M}_0$, an invariant subset of a Markov process $(X_t)_{t\geq 0}$ on a metric space $\mathcal{M}$. By building the theory of average Lyapunov functions, we formulate general criteria based on the signs of Lyapunov e
Externí odkaz:
http://arxiv.org/abs/2407.19606
In this paper, we study the probabilistic local well-posedness of the cubic Schr\"odinger equation (cubic NLS): \[ (i\partial_{t} + \Delta) u = \pm |u|^{2} u \text{ on } [0,T) \times \mathbb{R}^{d}, \] with initial data being a Wiener randomization a
Externí odkaz:
http://arxiv.org/abs/2401.08872
Autor:
Foldes, Juraj, Sy, Mouhamadou
We construct various statistical ensembles associated to the 3D Euler equations and prove global regularity of these equations for data living on these sets. Similar results are also proven for generalized SQG equations and some shell models. Qualita
Externí odkaz:
http://arxiv.org/abs/2401.00332
Autor:
Mugatwala, R., Chierichini, S., Francisco, G., Napoletano, G., Foldes, R., Giovannelli, L., De Gasperis, G., Camporeale, E., Erdélyi, R., Del Moro, D.
One of the goals of Space Weather studies is to achieve a better understanding of impulsive phenomena, such as Coronal Mass Ejections (CMEs), in order to improve our ability to forecast them and mitigate the risk to our technologically driven society
Externí odkaz:
http://arxiv.org/abs/2311.13429
Autor:
Csaki, Endre, Foldes, Antonia
A tribute to the life and work of Pal Revesz. The Hungarian mathematical community lost one of his leading members, when Pal Revesz passed away on 14 of November 2022.
Externí odkaz:
http://arxiv.org/abs/2310.16163
We present a novel machine learning approach to reduce the dimensionality of state variables in stratified turbulent flows governed by the Navier-Stokes equations in the Boussinesq approximation. The aim of the new method is to perform an accurate re
Externí odkaz:
http://arxiv.org/abs/2310.04186
Autor:
Sorriso-Valvo, Luca, Marino, Raffaele, Raffaello, Foldes, Lévêque, Emmanuel, D'Amicis, Raffaella, Bruno, Roberto, Telloni, Daniele, Yordanova, Emiliya
The linear scaling of the mixed third-order moment of the magnetohydrodynamic fluctuations is used to estimate the energy transfer rate of the turbulent cascade in the expanding solar wind. In 1976 the Helios 2 spacecraft measured three samples of fa
Externí odkaz:
http://arxiv.org/abs/2302.09064
Autor:
Foldes, Raffaello, Lévêque, Emmanuel, Marino, Raffaele, Pietropaolo, Ermanno, De Rosis, Alessandro, Telloni, Daniele, Feraco, Fabio
Simulating plasmas in the Hall-MagnetoHydroDynamics (Hall-MHD) regime represents a valuable {approach for the investigation of} complex non-linear dynamics developing in astrophysical {frameworks} and {fusion machines}. Taking into account the Hall e
Externí odkaz:
http://arxiv.org/abs/2212.11024
In this paper, we study the local well-posedness of the cubic Schr\"odinger equation: \[ (i \partial_t - \mathscr{L}) u = \pm |u|^2 u \quad \text{ on } I \times \mathbb{R}^d, \] with randomized initial data, and $\mathscr{L}$ being an operator of deg
Externí odkaz:
http://arxiv.org/abs/2203.03500