Stability of trajectories in Ernst space–time

1986 ◽  
Vol 64 (11) ◽  
pp. 1455-1457 ◽  
Author(s):  
K. D. Krori ◽  
Ranjana Choudhury ◽  
J. C. Sarmah
Keyword(s):  
Equatorial Plane ◽  
Charged Particles ◽  
Space Time ◽  
Neutral Particles

In this paper we show that stable trajectories of charged particles, neutral particles, photons, and tachyons occur in the equatorial plane of the Ernst space–time. We also present typical bound trajectories of these particles in the equatorial plane (θ = π/2) as well as on an r = constant surface.

Radial motion of charged particles along axis of the Kerr–Newman– (anti-)de sitter space-time

2018 ◽  
Vol 6 (2) ◽  
pp. 19
Author(s):  
Kameshwar Nath Mishra ◽  
Varull Mishra
Keyword(s):  
Charged Particle ◽  
Effective Potential ◽  
Equatorial Plane ◽  
Jacobi Equation ◽  
Charged Particles ◽  
De Sitter Space ◽  
Space Time ◽  
Radial Motion ◽  
De Sitter ◽  
Hamilton Jacobi Equation

The motion of uncharged particles in the Kerr–Newman–(anti-)de Sitter space-time has been studied by using the Hamilton –Jacobi equation. We have considered both charged particle Q and non-vanishing cosmological constant Λ , focusing on the equatorial plane and space time of the axis. For the study of radial of radial motion on the axis of space time an effective potential have been developto describe the turning points  

The Jovian ring

1984 ◽  
Vol 75 ◽  
pp. 203-209
Author(s):  
Joseph A. Burns
Keyword(s):  
Equatorial Plane ◽  
Charged Particles ◽  
Dynamical Evolution ◽  
Main Band ◽  
Small Grains ◽  
Three Components

ABSTRACTLying in Jupiter's equatorial plane is a diaphanous ring having little substructure within its three components (main band, faint disk, and halo). Micron-sized grains account for much of the visible ring, but particles of centimeter sizes and larger must also be present to absorb charged particles. Since dynamical evolution times and survival life times are quite short (≲102-3yr) for small grains, the Jovian ring is being continually replenished; probably most of the visible ring is generated by micrometeoroids colliding into unseen parent bodies that reside in the main band.

UPGRADE FOR THE CBELSA/TAPS EXPERIMENT AT ELSA FOR η AND η′ DECAYS

2010 ◽  
Vol 19 (05n06) ◽  
pp. 938-945 ◽  
Author(s):  
◽  
MICHAEL LANG
Keyword(s):  
Cross Sections ◽  
Major Part ◽  
Charged Particles ◽  
Final State ◽  
Accelerator Facility ◽  
Neutral Particles ◽  
Tracking Detector ◽  
Set Up ◽  
Photo Production

The CBELSA/TAPS experiment is a set up installed at the accelerator facility ELSA in Bonn. It is used to measure cross sections of hadronic reactions by observing final state particles. The set up is well suited for the identification of neutral particles such as neutrons and photons (e.g. from π0 decay). It is planed to access the major part of η and η′ photo production and decays as also strangeness. This requires a neutral trigger capability for the detector set up and a tracking detector for charged particles.

LOOP VARIABLE AND HOLONOMY TRANSFORMATIONS IN THE KERR–NEWMAN SPACE–TIME

2007 ◽  
Vol 16 (08) ◽  
pp. 1327-1339
Author(s):  
J. GOMES DE ASSIS ◽  
C. FURTADO ◽  
V. B. BEZERRA
Keyword(s):  
Black Hole ◽  
Equatorial Plane ◽  
Space Time ◽  
Charged Black Hole

We compute the loop variable for different curves in the Kerr–Newman space–time, taking into account the appropriate modification of these quantities due to the rotation of the source. In parallel transporting of both vectors and spinors, we examine how the rotation of the charged black hole affects the holonomy for a circle on the equatorial plane.

CHARGED SPINNING PARTICLES ON CIRCULAR ORBITS IN THE REISSNER–NORDSTRÖM SPACE–TIME

2005 ◽  
Vol 14 (10) ◽  
pp. 1793-1811 ◽  
Author(s):  
DONATO BINI ◽  
ANDREA GERALICO ◽  
FERNANDO DE FELICE
Keyword(s):  
Equatorial Plane ◽  
Space Time ◽  
Circular Orbits ◽  
Spinning Particles ◽  
Arrival Times ◽  
Opposite Charge ◽  
Test Particles

The behavior of charged spinning test particles moving along circular orbits in the equatorial plane of the Reissner–Nordström space–time is studied in the framework of the Dixon–Souriau model completed with standard choices of supplementary conditions. The gravitomagnetic "clock effect," i.e. the delay in the arrival times of two oppositely circulating particles as measured by a static observer, is derived and discussed in the cases in which the particles have equal/opposite charge and spin, the latter being directed along the z-axis.

scholarly journals NONLINEAR VACUUM PHENOMENA IN NONCOMMUTATIVE QED

2001 ◽  
Vol 16 (06) ◽  
pp. 1123-1146 ◽  
Author(s):  
L. ALVAREZ-GAUMÉ ◽  
J. L. F. BARBÓN
Keyword(s):  
Nonperturbative Effects ◽  
Plane Wave ◽  
Plane Waves ◽  
Charged Particles ◽  
Time Frame ◽  
Constant Field ◽  
Gauge Invariant ◽  
Neutral Particles ◽  
Related Space ◽  
Plane Wave Background

We show that the classic results of Schwinger on the exact propagation of particles in the background of constant field-strengths and plane waves can be readily extended to the case of nocommutative QED. It is shown that nonperturbative effects on constant backgrounds are the same as their commutative counterparts, provided the on-shell gauge-invariant dynamics are referred to a nonperturbatively related space–time frame. For the case of the plane wave background, we find evidence of the effective extended nature of noncommutative particles, producing retarded and advanced effects in scattering. Besides the known "dipolar" character of noncommutative neutral particles, we find that charged particles are also effectively extended, but they behave instead as "half-dipoles."

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