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The Gravitational Field of a Circulating Light Beam


Exact solutions of the Einstein field equations are found for the exterior and interior gravitational field of an infinitely long circulating cylinder of light. The exterior metric is shown to contain closed timelike lines.

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Mallett, R.L. The Gravitational Field of a Circulating Light Beam. Foundations of Physics 33, 1307–1314 (2003).

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  • general relativity and gravitation
  • exact solutions
  • closed timelike lines
  • lasers