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

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

2004-08-17

arxiv.org/abs/gr-qc/0408054v5

Eur.Phys.J.C42:349,2005

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

final version to be published in EPJC

Scientific paper

10.1140/epjc/s2005-02295-8

Using the Hamilton-Jacobi formalism, we study extra force and extra mass in a recently introduced noncompact Kaluza-Klein cosmological model. We examine the inertial 4D mass $m_0$ of the inflaton field on a 4D FRW bulk in two examples. We find that $m_0$ 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.

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