Authors

Citation

Z. Stuchlik et S. Hledik, Equilibrium of a charged spinning test particle in Reissner-Nordstrom backgrounds with a nonzero cosmological constant - art. no. 104016, PHYS REV D, 6410(10), 2001, pp. 4016

Citations number

27

Language

INGLESE

art.tipo

Article

Categorie Soggetti

Physics

Journal title

PHYSICAL REVIEW D

ISSN journal

0556-2821
→ ACNP

Volume

6410

Issue

10

Year of publication

2001

Database

ISI

SICI code

0556-2821(20011115)6410:10<4016:EOACST>2.0.ZU;2-I

Abstract

The equilibrium of a charged test particle with spin located in the Reissne
r-Nordstrom background with a nonzero cosmological constant is investigated
. The stationary equilibrium conditions resulting from the equations of mot
ion and the equations of spin dynamics have to be satisfied simultaneously.
It is shown that equilibrium conditions are independent of the spin of the
test particle. For uncharged particles, they are satisfied at the so-calle
d static radius, where gravitational attraction is exactly compensated for
by cosmological repulsion. For charged particles, there is a variety of pos
sible equilibria due to the electromagnetic interaction of the particle and
the background. Any charged particle can be in an unstable equilibrium sta
te between the black-hole and cosmological horizons of asymptotically de Si
tter spacetimes, while sufficiently repulsed particles can be in an inner u
nstable equilibrium state and an outer stable equilibrium state above the h
orizon of asymptotically anti-de Sitter spacetimes. The separation-independ
ent equilibrium is possible in extreme Reissner-Nordstrom(c)spacetimes only
.