Speaker
Prof.
Daniel Kaplan
(Illinois Institute of Technology)
Description
The gravitational acceleration of antimatter, $\bar g$, has yet to be directly measured; an unexpected outcome of its measurement could change our understanding of gravity, the universe, and the possibility of a fifth force. Three avenues are apparent for such a measurement: antihydrogen, positronium, and muonium, the last requiring a precision atom interferometer and novel muonium beam under development. The interferometer and its few-picometer alignment and calibration systems appear feasible. With 100 nm grating pitch, measurements of $\bar g$ to 10%, 1%, or better can be envisioned. These could constitute the first gravitational measurements of leptonic matter, of 2nd-generation matter, and possibly, of antimatter.
| kaplan@iit.edu | |
| Collaboration name | MAGE |
Primary author
Prof.
Daniel Kaplan
(Illinois Institute of Technology)
