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NEW JOURNAL OF PHYSICS
Volume 4, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/4/1/337
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Some exact solutions of Einstein's field equations represent a rotating universe. One example is Godel's cosmological model. Bianchi solutions generalize the Godel 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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