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Probing Gravity with Spacetime Sirens
Cedric Deffayet, Kristen Menou
A gravitational observatory such as LISA will detect coalescing pairs of massive black holes, accurately measure their luminosity distance and help identify a host galaxy or an ele…
Supernovae, CMB, and Gravitational Leakage into Extra Dimensions
Cédric Deffayet, Susana J. Landau, Julien Raux +2
We discuss observational constraints coming from CMB and type Ia supernovae, for the model of accelerated universe produced by gravitational leakage into extra dimensions. Our fits…
Comments on "A Supernova Brane Scan"
C. Deffayet, G. Dvali, G. Gabadadze
Recently we proposed that the acceleration of the Universe could be due to gravity leaking to extra dimensions. This scenario gives an alternative to the cosmological constant or q…
Accelerated Universe from Gravity Leaking to Extra Dimensions
Cédric Deffayet, Gia Dvali, Gregory Gabadadze
We discuss the idea that the accelerated Universe could be the result of the gravitational leakage into extra dimensions on Hubble distances rather than the consequence of non-zero…