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astro-ph2002★ 41 cited
Accelerated expansion without dark energy
Dominik J. Schwarz
The fact that the LambdaCDM model fits the observations does not necessarily imply the physical existence of `dark energy'. Dropping the assumption that cold dark matter (CDM) is a…
hep-th2002
Perturbations in the Ekpyrotic Scenarios
Patrick Peter, Jerome Martin, Nelson Pinto-Neto +1
With the new cosmological data gathered over the last few years, the inflationary paradigm has seen its predictions largely unchallenged. A recent proposal, called the ekpyrotic sc…