2,323 research outputs found
Magnetic String Coupled to Nonlinear Electromagnetic Field
We introduce a class of rotating magnetically charged string solutions of the
Einstein gravity with a nonlinear electrodynamics source in four dimensions.
The present solutions has no curvature singularity and no horizons but has a
conic singularity and yields a spacetime with a longitudinal magnetic field.
Also, we investigate the effects of nonlinearity on the properties of the
solutions and find that for the special range of the nonlinear parameter, the
solutions are not asymptotic AdS. We show that when the rotation parameter is
non zero, the spinning string has a net electric charge that is proportional to
the magnitude of the rotation parameter. Finally, we use the counterterm method
inspired by AdS/CFT correspondence and calculate the conserved quantities of
the solutions.Comment: 13 pages, 3 figure
Slowly Rotating Black Holes in Einstein-Generalized Maxwell Gravity
In this paper, with considering the nonlinear electromagnetic field coupled
to Einstein gravity, we obtain the higher dimensional slowly rotating charged
black hole solutions. By use of the fact that the temperature of the extreme
black hole is zero, we find that these solutions may be interpreted as black
hole solutions with inner (Cauchy) and outer (event) horizons provide that the
mass parameter is greater than an extremal value , an extreme
black hole if and a naked singularity otherwise. Also, we find that
the asymptotic behavior of the spacetime is not anti deSitter for the special
values of the nonlinearity parameter. Then, we compute the ADM mass, electrical
charge, temperature, entropy, angular momentum and gyromagnetic ratio of the
solutions. Calculations of the electromagnetic field, electrical charge,
entropy and temperature showed that they are sensitive with respect to the
changing of nonlinearity parameter.Comment: 12 page
Wormhole solutions in the presence of nonlinear Maxwell field
Generalizing of the Maxwell field to nonlinear electrodynamics theories, we
look for the magnetic solutions. In initial approximation these models give the
usual linear electrodynamics. We consider a suitable metric and investigate the
properties of the solutions. Also, we use the cut-and-paste method to construct
wormhole structure. We generalize the static solutions to rotating spacetime
and obtain conserved quantities.Comment: 15 pages, 7 figure
Praying Unceasingly: The Jesus Prayer
This article elucidates the theology and practice of the Jesus Prayer. Prayer, to the average person, is asking God for something. But, the Jesus prayer is not this. It is an attempt to change the one who prays. This prayer is traditionally a monastic prayer. Its simplicity allows everyone to practice it. In this prayer, there is faith and hope in the goodness of Christ. It is the prayer from our whole being. It is a cry out of the deep heart and nepsis without ceasing. The unceasing repetition of the Jesus Prayer kept the mind on the thought of God and dispersed all irrelevant thoughts (logismoi). This is the prayer requires watchfulness as a lantern requires a candle. Watchfulness, mature in Christ, the fruit of Spirit, and theosis will follow in the praying unceasingly: the Jesus Prayer
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