- qc / 0 10 20 77 v 1 1 7 Fe b 20 01 Exact solutions of charged wormhole
نویسندگان
چکیده
In this paper, the backreaction to the traversable Lorentzian wormhole spacetime by the scalar field or electric charge is considered to find the exact solutions. The charges play the role of the additional matter to the static wormhole which is already constructed by the exotic matter. The stability conditions for the wormhole with scalar field and electric charge are found from the positiveness and flareness for the wormhole shape function. Typeset using REVTEX E-mail address: [email protected] E-mail address: [email protected] 1
منابع مشابه
ar X iv : g r - qc / 0 10 20 78 v 1 1 7 Fe b 20 01 Scattering problem of scalar wave in wormhole geometry
In this paper, we study the scattering problem of the scalar wave in the traversable Lorentzian wormhole geometry. The potentials and Schrödinger-like equations are found in cases of the static uncharged and the charged wormholes. The differential scattering cross sections are determined by the phase shift of the asymptotic wave function in low frequency limit. It is also found that the cross s...
متن کاملr - qc / 0 70 21 43 v 1 2 7 Fe b 20 07 No “ big trips ” for the universe Valerio Faraoni
It has been claimed in several papers that a phantom energy-dominated universe can undergo a “big trip”, i.e., tunneling through a wormhole that grows faster than the cosmic substratum due to the accretion of phantom energy, and will reappear on the other mouth of the wormhole. We show that such claims are unfounded and contradict the Einstein equations. PACS: 04.20.-q, 04.20.Jb, 98.80.-k
متن کاملar X iv : g r - qc / 9 90 10 01 v 2 2 5 Fe b 20 02 Multidimensional cosmological and spherically symmetric solutions with intersecting p - branes
Multidimensional model describing the " cosmological " and/ or spherically symmetric configuration with (n + 1) Einstein spaces in the theory with several scalar fields and forms is considered. When electromagnetic composite p-brane ansatz is adopted, n " internal " spaces are Ricci-flat, one space M 0 has a non-zero curvature, and all p-branes do not " live " in M 0 , a class of exact solution...
متن کاملar X iv : g r - qc / 0 70 21 05 v 1 1 9 Fe b 20 07 Landau - Lifshitz and Weinberg Energy - Momentum Complexes for 2 + 1 Dimensional Black Hole Solutions
The aim of this paper is to evaluate the energy distribution of some 2 + 1 black hole solutions applying the Landau-Lifshitz and Weinberg definitions. The metrics under consideration describe the charged black hole, the solution coupling to a static scalar field and the static and circularly symmetric exact solution of the Einstein-massless scalar equation. Further, we compare the expressions f...
متن کامل- qc / 0 10 20 73 v 1 1 5 Fe b 20 01 BF gravity and the Immirzi parameter
We propose a novel BF-type formulation of real four-dimensional gravity, which generalizes previous models. In particular, it allows for an arbitrary Immirzi parameter. We also construct the analogue of the Urbantke metric for this model.
متن کامل