Results 41 to 50 of about 261,560 (199)

Gauge-Free Whittaker Potentials to Model Wave Propagation in Homogeneous Medium

IEEE Open Journal of Antennas and Propagation
This article deals with alternative scalar potential formulations where no side effect associated to gauging exists whose purpose is to enhance the variety of accessible methods for efficient calculations of electromagnetic (EM) wave fields.
Thomas Reum
doaj   +1 more source

A note on low energy scattering for homogeneous long range potentials

, 2008
We explicitly calculate the scattering matrix at energy zero for attractive, radial and homogeneous long-range potentials.
Frank, Rupert L.
core   +1 more source

Square Functions of Fractional Homogeneity and Wolff Potentials [PDF]

International Mathematics Research Notices, 2015
In this paper it is shown that for anymeasure $ $ in $\mathbb{R}^d$ and for a non-integer ...
Chousionis, Vasileios, Prat, Laura, Tolsa, Xavier   +2 more
openaire   +2 more sources

Kinetic Study of the Oxidation of Catechols in the Presence of N-Methylaniline

Journal of Chemistry, 2013
The reactions of electrochemically generated o-quinones from oxidation of catechol and 4-methylcatechol as Michael acceptors with N-methylaniline as nucleophile have been studied using cyclic voltammetry.
Lida Khalafi, Mohammad Rafiee, Maryam Shahbak, Hamidreza Shirmohammadi   +3 more
doaj   +1 more source

QUINTESSENCE AND PHANTOM ENERGY INHOMOGENEITIES AT LATE STAGES OF UNIVERSE EVOLUTION

Odessa Astronomical Publications, 2012
As it directly follows from the scalar perturbations, applied to the late stages of evolution of the Universe, filled with dark energy, nonrelativistic matter and, possibly, quintessence or phantom energy, the last two components can not be homogeneous ...
A. Burgazli, M. Eingorn, A. Zhuk
doaj   +1 more source

A unifying physically meaningful relativistic action

Scientific Reports, 2022
The motion of an object under the influence of force fields and/or media is described by means of a world-line with least action in its influenced spacetime.
Yaakov Friedman
doaj   +1 more source

Solution of Two-Body Bound State Problems with Confining Potentials

, 2010
The homogeneous Lippmann-Schwinger integral equation is solved in momentum space by using confining potentials. Since the confining potentials are unbounded at large distances, they lead to a singularity at small momentum.
Hadizadeh, M. R., Tomio, Lauro
core   +1 more source

The Tidal Potential of a Homogeneous Torus with an Elliptical Section of the Sleeve

Open Astronomy, 2016
In this paper the problem of the tidal potential of a homogeneous gravitating torus with an elliptical cross-section sleeve is solved. In particular, the potentials in analytical form in the vicinity of the center of the torus and its external region are
Kondratyev B. P., Trubitsyna N. G.
doaj   +1 more source

Intermediate inflation and the slow-roll approximation

, 2005
It is shown that spatially homogeneous solutions of the Einstein equations coupled to a nonlinear scalar field and other matter exhibit accelerated expansion at late times for a wide variety of potentials $V$.
Alan D Rendall, Anderson M, Barreiro T, Barrow J D, Bieli R, Kitada Y, Kitada Y, Lee H, Muslimov A G, Müller V, Parsons P, Rendall A D, Rendall A D, Rendall A D Ståhl F, Sahni V, Sahni V, Starobinsky A A, Tchapnda B, Tchapnda B Noutchegueme N, Urena-López L A   +19 more
core   +2 more sources

Free Cooling Phase-Diagram of Hard-Spheres with Short- and Long-Range Interactions [PDF]

, 2014
We study the stability, the clustering and the phase-diagram of free cooling granular gases. The systems consist of mono-disperse particles with additional non-contact (long-range) interactions, and are simulated here by the event-driven molecular ...
Gonzalez, S., Luding, S., Thornton, A. R.   +2 more
core   +2 more sources