The Equivalence Principle as a Probe for Higher Dimensions
arXiv:gr-qc/0601065 · doi:10.1142/S0218271805007991
Abstract
Higher-dimensional theories of the kind which may unify gravitation with particle physics can lead to significant modifications of general relativity. In five dimensions, the vacuum becomes non-standard, and the Weak Equivalence Principle becomes a geometrical symmetry which can be broken, perhaps at a level detectable by new tests in space.