Antonio Padilla 2004 Class. Quantum Grav. 21 2899 doi:10.1088/0264-9381/21/12/008
Antonio Padilla
Show affiliationsWe consider a generalization of the DGP model, by adding a second brane with localized curvature, and allowing for a bulk cosmological constant and brane tensions. We study radion and graviton fluctuations in detail, enabling us to check for ghosts and tachyons. By tuning our parameters accordingly, we find bigravity models that are free from ghosts and tachyons. These models will lead to large distance modifications of gravity that could be observable in the near future.
11.25.Wx String and brane phenomenology
Issue 12 (21 June 2004)
Received 4 March 2004
Published 18 May 2004
Antonio Padilla 2004 Class. Quantum Grav. 21 2899
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