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arxiv: 1206.3903 · v1 · pith:BK2PO4YAnew · submitted 2012-06-18 · 🌀 gr-qc · hep-th

How to detect an anti-spacetime

Marios Christodoulou , Aldo Riello , Carlo Rovelli This is my paper
classification 🌀 gr-qc hep-th
keywords signlapsemetricpossibleanti-spacetimecaptureddetectdifferent
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Is it possible, in principle, to measure the sign of the Lapse? We show that fermion dynamics distinguishes spacetimes having the same metric but different tetrads, for instance a Lapse with opposite sign. This sign might be a physical quantity not captured by the metric. We discuss its possible role in quantum gravity.

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