A Delgado et al 2002 New J. Phys. 4 37 doi:10.1088/1367-2630/4/1/337
A Delgado1, W P Schleich1 and G Süssmann2
Show affiliationsSome 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.
04.40.Nr Einstein-Maxwell spacetimes, spacetimes with fluids, radiation or classical fields
Issue 1 (June 2002)
Received 26 April 2002, in final form 10 June 2002
Published 26 June 2002
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