Wormhole geometries with conformal motions

Details Wormhole geometries with conformal motions Wormhole geometries with conformal motions

2007-11-15

arxiv.org/abs/0711.2424v2

Class.Quant.Grav.25:075016,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages. V2: clarifying comments added, to appear in Classical and Quantum Gravity

Scientific paper

10.1088/0264-9381/25/7/075016

Exact solutions of traversable wormholes were recently found under the assumption of spherical symmetry and the existence of a non-static conformal symmetry. In this paper, we verify that in the case of the conformally symmetric spacetimes with a non-static vector field generating the symmetry, the conformal factor $\psi$ can be physically interpreted in terms of a measurable quantity, namely, the tangential velocity of a massive test particle moving in a stable circular orbit in the spacetime. Physical properties of the rotational velocity of test particles and of the redshift of radiation emitted by ultra-relativistic particles rotating around these hypothetical general relativistic objects are further discussed. Finally, specific characteristics and properties of gravitational bremsstrahlung emitted by charged particles in geodesic motion in conformally symmetric wormhole geometries are also explored.

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