Extra force and extra mass from noncompact Kaluza-Klein theory in a cosmological model.

JOSE EDGAR MADRIZ AGUILAR; MAURICIO BELLINI

EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS

Springer Berlin

Lugar: Heidelberg; Año: 2005 vol. 42 p. 349 - 354

1434-6044

Using the Hamilton-Jacobi formalism, we study extra force and extra mass in a recently introduced non-compact Kaluza-Klein cosmological model. We examine the inertial 4D mass m0 of the inflaton field on a 4D FRW bulk in two examples. We find that m0 has a geometrical origin and antigravitational effects on a non-inertial 4D bulk should be a consequence of the motion of the fifth coordinate with respect to the 4D bulk.