Quantum gyroscopes and Gödel's universe: entanglement opens a new testing ground for cosmology

Details Quantum gyroscopes and Gödel's universe: entanglement opens a new testing ground for cosmology Quantum gyroscopes and Gödel's universe: entanglement opens a new testing ground for cosmology

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002njph....4...37d&link_type=abstract

New Journal of Physics, Volume 4, Issue 1, pp. 37 (2002).

Physics

3

Scientific paper

Some exact solutions of Einstein's field equations represent a rotating universe. One example is Gödel's cosmological model. Bianchi solutions generalize the Gödel metric and include the expansion of the universe. We propose a measurement of the cosmic rotation using a light or matter wave interferometer based on the Sagnac effect. Entanglement between the quanta employed in this quantum gyroscope enhances the accuracy, thereby coming closer to the more-than-challenging requirements of such experiments.

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