41 citations · 41 across the 1 of their papers we have counts for
9 papers
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…
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…
Damping of inhomogeneities in neutralino dark matter
Dominik J. Schwarz, Stefan Hofmann, Horst Stoecker
The lightest supersymmetric particle, most likely the neutralino, might account for a large fraction of dark matter in the Universe. We show that the primordial spectrum of density…
QCD phase transition and primordial density perturbations
J. Ignatius, Dominik J. Schwarz
We analyze the effect of primordial density perturbations on the cosmic QCD phase transition. According to our results hadron bubbles nucleate at the cold perturbations. We call th…
Clumping of CDM from the cosmological QCD transition
Dominik J. Schwarz, Christoph Schmid, Peter Widerin
The cosmological QCD transition affects primordial density perturbations. If the QCD transition is first order, the sound speed vanishes during the transition and density perturbat…
Predictions of inflation: the slow roll approximation vs. exact results
Dominik J. Schwarz, Jerome Martin
Inflation predicts the generation of cosmological perturbations. Usually, the power spectra for the scalar and tensor modes are calculated with help of the slow roll approximation.…