Prospects for Large Relativity Violations in Matter-Gravity Couplings

Understand

Deviations from relativity are tightly constrained by numerous experiments.

• A class of unmeasured and potentially large violations is presented that can be tested in the laboratory only via weak gravity couplings.
• Specialized highly sensitive experiments could achieve measurements of the corresponding effects.
• A single constraint of 1 x 10^{-11} GeV is extracted on one combination of the 12 possible effects in ordinary matter.