Antimatter gravity studies with interferometry |
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Authors: | Thomas J Phillips |
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Institution: | (1) Department of Physics, Duke University, Durham, NC 27708-0305, USA |
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Abstract: | There has never been a direct measurement of the gravitational force on antimatter. This paper describes a possible measurement
of this force by measuring the phase shift of neutral antimatter in a transmission-grating interferometer caused by the Earth’s
gravitational field. This experiment avoids the severe problem of shielding stray electromagnetic fields necessary for making
a gravity measurement with charged particles, and also avoids the need to trap neutral particles. The neutral antimatter for
this experiment could be either antihydrogen, positronium, or antineutrons.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | antihydrogen antimatter antineutron positronium gravity |
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