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24 papers · 1 filter
Geometric Theory of the Recursion Operators for the Generalized Zakharov-Shabat System in Pole Gauge on the Algebra sl(n,C)
Alexandar B. Yanovski, Gaetano Vilasi
We consider the recursion operator approach to the soliton equations related to the generalized Zakharov-Shabat system on the algebra sl(n,C) in pole gauge both in the general posi…
Breathers in PT-symmetric optical couplers
I. V. Barashenkov, Sergey V. Suchkov, Andrey A. Sukhorukov +2
We show that the parity-time (PT) symmetric coupled optical waveguides with gain and loss support localised oscillatory structures similar to the breathers of the classical m…
On the collapse in fourth order gravities
B. Montes Núñez, J. A. R. Cembranos, A. de la Cruz-Dombriz
The gravitational collapse in fourth order theories of gravity defined by an arbitrary action of the scalar curvature shows significant deviations with General Relativity. The pres…
The Tsallis Distribution at the LHC
J. Cleymans
The Tsallis distribution has been used widely in high energy physics to describe the transverse momnetum distributions of particles. In this note we show that the use of a thermody…
Know (better) your neighbour: New HI structures in Messier 33 unveiled by a multiple peak analysis of high-resolution 21-cm data
Laurent Chemin, Claude Carignan, Tyler Foster +1
In our quest to constrain the dynamical and structural properties of Local Group spirals from high-quality interferometric data, we have performed a neutral hydrogen survey in the…
On the absence of the usual weak-field limit, and the impossibility of embedding some known solutions for isolated masses in cosmologies with f(R) dark energy
Timothy Clifton, Peter Dunsby, Rituparno Goswami +1
The problem of matching different regions of spacetime in order to construct inhomogeneous cosmological models is investigated in the context of Lagrangian theories of gravity cons…