Gravitational radiation antennas using the Sagnac effect.

Details Gravitational radiation antennas using the Sagnac effect. Gravitational radiation antennas using the Sagnac effect.

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982gregr..14..515a&link_type=abstract

General Relativity and Gravitation, Volume 14, Issue 6, pp.515-521

Computer Science

Sound

20

Detectors:Gravitational Radiation

Scientific paper

A new class of gravitational antennas that utilize the general relativistic Sagnac effect is proposed. These antennas may be more efficient than the Weber bar by a factor of (c/vs)4 ˜ 1019, wherev sis the velocity of sound in the bar. A specific case of such an antenna consisting of a superfluid helium Josephson interferometer is considered. A general relativistic theory of the interaction of the superfluid with the gravitational field is given. Using this theory, the phase shift due to a gravitational plane wave on one such antenna is obtained. More generally, the proposed interferometer involves the interplay of general relativity and quantum theory and may afford the possibility of testing general relativity in the laboratory at the quantum mechanical level. The possibility of detecting gravitons, assuming nearly unit coupling efficiency for the antenna, is explored.

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