paper

A nongravitational wormhole

arXiv:gr-qc/0003075 · doi:10.1088/0264-9381/17/16/311

Abstract

Using the effective metric formalism for photons in a nonlinear electromagnetic theory, we show that a certain field configuration in Born-Infeld electromagnetism in flat spacetime can be interpreted as an ultrastatic spherically symmetric wormhole. We also discuss some properties of the effective metric that are valid for any field configuration.

LaTex, 9 pages with 5 figures, minor changes, accepted for publication in Class. Quantum Grav

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