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We discuss the corrections to the lifetime of unstable elementary particles in some models of doubly special relativity. We assume that the speed of light is invariant and that the position coordinates transform in such a way to ensure the…

General Relativity and Quantum Cosmology · Physics 2010-01-11 S. Mignemi

We propose a method of generation of long-living plasma objects on the base of low-temperature plasma with condensed dispersed phase in the form of microscopic metal particle and investigate their main characteristics.

Plasma Physics · Physics 2007-05-23 A. L. Pirozerski , S. E. Emelin

The dependences between the parameters of the Lightning discharge in the leader phase and the return stroke phase are obtained. It is shown that the peak values of the electric field created by lightning are determined by the parameters of…

Plasma Physics · Physics 2019-09-17 N. I. Petrov , G. N. Petrova

We investigate structure and evolution of long positive spark breakdown; and we study at which stage pulses of hard X-rays are emitted. Positive high-voltage pulses of standardized lightning impulse wave form of about 1 MV were applied to…

Plasma Physics · Physics 2015-03-13 P. O. Kochkin , C. V. Nguyen , A. P. J. van Deursen , U. Ebert

The physical deflection angle of a light ray propagating in a space-time supplied with an asymptotically flat metric has to be expressed in terms of the impact parameter.

General Relativity and Quantum Cosmology · Physics 2007-05-23 J. -M. Gerard , S. Pireaux

Some characteristic features in the radiation from a relativistic electron uniformly rotating along an equatorial orbit around a dielectric ball have been studied. It was shown that at some harmonics, in case of weak absorption of radiation…

High Energy Physics - Theory · Physics 2009-11-11 L. Sh. Grigoryan , H. F. Khachatryan , S. R. Arzumanyan , M. L. Grigoryan

Electrons emitting non-thermal photons in blazars are possibly accelerated by turbulences developed in jets. In this paper, we consider the case so-called hard-sphere scattering as an interaction model between turbulences and electrons, in…

High Energy Astrophysical Phenomena · Physics 2018-07-11 Katsuaki Asano , Masaaki Hayashida

Cosmic balloons, consisting of relativistic particles trapped inside a spherical domain wall, may be created in the early universe. We calculate the balloon mass $M$ as a function of the radius $R$ and the energy density profile, $\rho…

High Energy Physics - Phenomenology · Physics 2009-12-30 B. Holdom

Scattering of electromagnetic waves by many small particles of arbitrary shapes is reduced rigorously to solving linear algebraic system of equations bypassing the usual usage of integral equations. The matrix elements of this linear…

Mathematical Physics · Physics 2009-11-11 A. G. Ramm

We consider the open stadium billiard, consisting of two semicircles joined by parallel straight sides with one hole situated somewhere on one of the sides. Due to the hyperbolic nature of the stadium billiard, the initial decay of…

Chaotic Dynamics · Physics 2015-05-13 Carl P. Dettmann , Orestis Georgiou

We propose a non-equilibrium, hadronic kinetic model for describing the relative abundance of strange particles in ultra-relativistic heavy-ion collisions. The energy dependence of the multiplicity ratios of charged kaons and lambdas to…

Nuclear Theory · Physics 2007-05-23 Boris Tomasik , Evgeni E Kolomeitsev

We study the energy critical wave equation in 3 dimensions around a single soliton. We obtain energy boundedness (modulo unstable modes) for the linearised problem. We use this to construct scattering solutions in a neighbourhood of…

Analysis of PDEs · Mathematics 2024-03-22 Istvan Kadar

This Letter presents the novel experimental observation of long and narrow jets shooting out in disconnecting large elongated bubbles. We investigate this phenomenon by carrying out experiments with various viscosities, surface tensions,…

Fluid Dynamics · Physics 2012-07-05 Thomas Séon , Arnaud Antkowiak

The ultrafast laser-induced solid-liquid phase transition in metals is still not clearly understood and its accurate quantitative description remains a challenge. Here we systematically investigated, both experimentally and theoretically,…

A general scaling of the evolution of an exploding liquid jet under an ultra short and intense X-ray pulse from a X-ray free electron laser (XFEL) is proposed. A general formulation of the conservation of energy for blasts in vacuum…

Fluid Dynamics · Physics 2019-08-14 Alfonso M. Ganan-Calvo

We propose a novel measurement technique capable of determining the temporal duration of an intense laser pulse directly in its focus at full intensity. We show that the electromagnetic radiation pattern emitted by an electron bunch with a…

Optics · Physics 2019-12-30 Felix Mackenroth , Amol R. Holkundkar

A new type of the THz laser is proposed. A coherent tera-hertz light is emitted through the backward Raman scattering between a visible light laser and a relativistic electron beam. The threshold conditions for the laser intensity and the…

Plasma Physics · Physics 2020-03-05 S. Son

The impact and rupture of water-filled balloons upon a flat, rigid surface is studied experimentally, for which three distinct stages of the flow are observed. Due to the impact, waves are formed on the balloon's surface for which the…

Fluid Dynamics · Physics 2011-10-18 Hugh M. Lund , Stuart B. Dalziel

We study the time evolution of the wave function of a particle bound by an attractive $\delta$-function potential when it is subjected to time dependent variations of the binding strength (parametric excitation). The simplicity of this…

Mathematical Physics · Physics 2009-10-31 Alexander Rokhlenko , Joel L. Lebowitz

Diffusion of molecules within biological cells and tissues is strongly influenced by crowding. A key quantity to characterize diffusion is the particle lifetime, which is the time taken for a diffusing particle to exit by hitting an…

Biological Physics · Physics 2018-04-03 Elliot J Carr , Matthew J Simpson