On a General Class of Wormhole Geometries

Details On a General Class of Wormhole Geometries On a General Class of Wormhole Geometries

2000-09-20

arxiv.org/abs/gr-qc/0009072v2

Class.Quant.Grav. 18 (2001) 1187-1204

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

28 pages, 4 figures, AMS. Updated version contains more analysis at the throat junction, corrected typos, added references. Ac

Scientific paper

10.1088/0264-9381/18/7/304

A general class of solutions is obtained which describe a spherically symmetric wormhole system. The presence of arbitrary functions allows one to describe infinitely many wormhole systems of this type. The source of the stress-energy supporting the structure consists of an anisotropic brown dwarf ``star'' which smoothly joins the vacuum and may possess an arbitrary cosmological constant. It is demonstrated how this set of solutions allows for a non-zero energy density and therefore allows positive stellar mass as well as how violations of energy conditions may be minimized. Unlike examples considered thus far, emphasis here is placed on construction by manipulating the matter field as opposed to the metric. This scheme is generally more physical than the purely geometric method. Finally, explicit examples are constructed including an example which demonstrates how multiple closed universes may be connected by such wormholes. The number of connected universes may be finite or infinite.

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