Abstract
From the experimental point of view, very little is known about the gravitational interaction between matter and antimatter. In particular, the Weak Equivalence Principle, which is of paramount importance for the General Relativity, has not yet been directly probed with antimatter. The main goal of the AEgIS experiment at CERN is to perform a direct measurement of the gravitational force on antimatter. The idea is to measure the vertical displacement of a beam of cold antihydrogen atoms, traveling in the gravitational field of the Earth, by the means of a moiré deflectometer. An overview of the physics goals of the experiment, of its apparatus and of the first results is presented.
Highlights
It is experimentally well known that objects fall in the gravitational field of the Earth with the same acceleration, regardless their mass or composition
The main goal of the AEgIS experiment at CERN is to perform a direct measurement of the gravitational force on antimatter
In 1916 Einstein extended the Weak Equivalence Principle (WEP) [2] to create what is known today as the Einstein Equivalence Principle (EEP), which is a pillar of the General Relativity [3]
Summary
3012 Bern, Switzerland bDepartment of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25123. AaThe Research Council of Norway, P.O. Box 564, NO-1327 Lysaker, Norway abDepartment of Civil Engineering, University of Brescia, via Branze 43, 25123 Brescia, Italy
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