In this paper we study existence and orbital stability for solitary waves of the nonlinear Klein-Gordon equation. The energy of these solutions travels as a localized packet, hence they are aâ€¦ (More)

Roughly speaking a solitary wave is a solution of a field equation whose energy travels as a localised packet and which preserves this localisation in time. A soliton is a solitary wave whichâ€¦ (More)

In this paper we look for standing waves for nonlinear SchrÃ¶dinger equations i âˆ‚Ïˆ âˆ‚t + âˆ†Ïˆ âˆ’ g(|y|)Ïˆ âˆ’ W â€² (|Ïˆ|) Ïˆ |Ïˆ| = 0 with cylindrically symmetric potentials g vanishing at infinity andâ€¦ (More)

Following the original approach introduced by T. Cazenave and P.L. Lions in [4] we prove the existence and the orbital stability of standing waves for the following class of NLS: (0.1) iâˆ‚tu + âˆ†u âˆ’ Vâ€¦ (More)

In this paper we study the existence and the instability of standing waves with prescribed L-norm for a class of SchrÃ¶dinger-Poisson-Slater equations in R (0.1) iÏˆt +âˆ†Ïˆ âˆ’ (|x| âˆ— |Ïˆ|)Ïˆ + |Ïˆ|Ïˆ = 0 whenâ€¦ (More)

The complex interactions existing between turbulence and mixing in a bluffbody stabilised flame configuration is investigated by means of a wavelet crosscorrelation analysis on Large Eddyâ€¦ (More)

We provide a max-min characterization of the mountain pass energy level for a family of variational problems. As a consequence we deduce the mountain pass structure of solutions to suitable PDEs,â€¦ (More)

A model to explain the statistics of the velocity gradients in the dissipation range of a turbulent flow is presented. The experimentally observed non-gaussian statistics is theoretically predictedâ€¦ (More)

We demonstrate how the HÃ¶lder regularity of a given signal is a lower bound for the Grassberger-Procaccia correlation dimension of strange attractors PACS numbers : 05.45D,47.52 It is known from theâ€¦ (More)