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Wave function of the radion with a bulk scalar field

P. Brax·C. van de Bruck·A. C. Davis·C. S. Rhodes
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Abstract

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.

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P. Brax, C. van de Bruck, A. C. Davis, C. S. Rhodes. 2002-01-24. Wave function of the radion with a bulk scalar field. https://doi.org/10.1016/s0370-2693(02)01360-6

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