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Title: Braneworlds, conformal fields and the gravitons
Authors: Neves, Rui
Keywords: High Energy Physics
Issue Date: 21-Sep-2006
Publisher: Institute of Physics
Citation: Neves, R. (2007). Braneworlds, conformal fields and the gravitons. Journal of Physics A: Mathematical and Theoretical 40 (25), 6991-6997
Abstract: We investigate the dynamics of Randall-Sundrum AdS5 braneworlds with 5-dimensional conformal matter fields. In the scenario with a compact fifth dimension the class of conformal fields with weight -4 is associated with exact 5-dimensional warped geometries which are stable under radion field perturbations and describe on the brane the dynamics of inhomogeneous dust, generalized dark radiation and homogeneous polytropic dark energy. We analyse the graviton mode flutuations around this class of background solutions and determine their mass eigenvalues and wavefunctions from a Sturm-Liouville problem. We show that the localization of gravity is not sharp enough for large mass hierarchies to be generated. We also discuss the physical bounds imposed by experiments in particle physics, in astrophysics and in precise measurements of the low energy gravitational interaction.
Peer Reviewed: yes
metadata.dc.identifier.doi: 10.1088/1751-8113/40/25/S51
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Appears in Collections:DCT - Artigos/Papers

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