Physics
Scientific paper
Apr 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001phrvd..63h7502p&link_type=abstract
Physical Review D, vol. 63, Issue 8, id. 087502
Physics
2
Spacetime Topology, Causal Structure, Spinor Structure, Exact Solutions, Einstein-Maxwell Spacetimes, Spacetimes With Fluids, Radiation Or Classical Fields
Scientific paper
In this work the junction condition formalism is used to build up wormholes from two identical spacetimes, which are exact solutions of the Einstein-Maxwell equations. The surgery produces a class of wormholes in which the amount of exotic matter is controlled by an external magnetic field. It is demonstrated that the total amount of exotic material is a decreasing function of the magnetic field intensity and that most of the remaining material is concentrated near the poles of the junction. A region in which there is no violation of the null and strong energy conditions is determined. The range of applicability of the model is discussed in some detail.
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