#### F. Cardone, M. Francaviglia, R. Mignani

### Abstract

A recent analysis of the experimental data on some physical phenomena ruled by the four fundamental interactions (electromagnetic, weak, strong and gravitational) seems to show the possibility of describing such interactions in terms of a deformation of the usual Minkowski spacetime, with a metric whose coefficients do depend on the energy of the process considered.

In this paper we show that such results can be accounted for in terms of a Kaluza-Klein-like scheme, based on a ﬁve-dimensional Riemannian space in which energy plays the role of the fifth dimension.

The corresponding ﬁve-dimensional Einstein equations in vacuum are solved in some cases of physical relevance and it is shown that all the phenomenological metrics describing the four fundamental forces are recovered as special cases of the classes of solutions found.

Possible developments of the formalism are also brieﬂy outlined.

Foundation of Physics Letters, 12, 347 (1999)