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arXiv · gr-qc/0202031

The orientability of spacetime

Mark J Hadley
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Abstract

Contrary to established beliefs, spacetime may not be time-orientable. By considering an experimental test of time orientability it is shown that a failure of time-orientability of a spacetime region would be indistinguishable from a particle antiparticle annihilation event.

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Mark J Hadley. 2002-06-23. The orientability of spacetime. https://doi.org/10.1088/0264-9381%2F19%2F17%2F308

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