An Antihydrogen Interferometer for Measuring Antimatter Gravity
نویسنده
چکیده
The gravitational force on antimatter has never been directly measured, largely because electromagnetic forces overwhelm gravitational forces and no form of low-energy neutral antimatter has been available. However, the technology to make low-energy antihydrogen is currently being developed. We have designed an atomic interferometer that can measure the force of gravity on hydrogen or antihydrogen using a phase shift caused by gravity. The initial stage of the project is a demonstration experiment that will measure the gravitational force on hydrogen. A precise di erence measurement between hydrogen and antihydrogen would be capable of detecting a new force that couples di erently to matter and antimatter. This paper describes the proposed experiment and current progress towards realizing the measurement.
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