How a Single Experiment May Have Tipped The Foundation of Physics

In the theory of General Relativity (GR), everything is affected by the warping of spacetime, whether the particle state observed is the spin, angular momentum, charge or mass typically expected. This idea was further investigated at the CERN laboratory. Through proper preparation and experimentation, CERN has constructed an experiment to test how antimatter behaves under the same gravitational influences as typical matter. In the ALPHA-g chamber, a combination of positrons, antiprotons and neutrons are captured to create antihydrogen. This antihydrogen was then used in a trapped magnetic field, which was released from said field to observe the effect on the trajectory of the antihydrogen. The resulting trajectory follows with the idea of WEP (Weak Equivalence Principle) proposed by GR. This principle states that for non-inertial reference frames, all particles abide with the same under free-fall conditions. The result of the experiment provided an accuracy of approximately (0.75 ± 0.13 (statistical + systematic) ± 0.16 (simulation)) for the GR outcome prediction. These results make a significant difference in determining if building off GR is necessary in the prospective of String Theory or Loop Quantum Gravity.