Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-01-24
Phys.Lett. B531 (2002) 135-142
Physics
High Energy Physics
High Energy Physics - Theory
13 pages, LaTeX
Scientific paper
10.1016/S0370-2693(02)01360-6
The behaviour of the distance between two branes (the `radion') in a braneworld model with a bulk scalar field is investigated. We show that the BPS conditions of supergravity ensure that the dynamics of the scalar field and the radion are not independent; we derive the four-dimensional effective action, showing that the effective theory is of scalar--tensor nature, coupling the radion to four-dimensional gravity.
Brax Philippe
Davis Anne--Christine
Rhodes C. S.
van de Bruck Carsten
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