We consider a simple cosmological model that includes a long ekpyrotic contraction stage and smooth bounce after it. Ekpyrotic behavior is due to a scalar field with a negative exponential potential, whereas the Galileon field produces bounce. We give an analytical picture of how the bounce occurs within the weak gravity regime, and then perform numerical analysis to extend our results to a non-perturbative regime.
International audienceWe perform a detailed investigation of the simplest possible cosmological mode...
In bouncing cosmology, the primordial fluctuations are generated in a cosmic contraction phase befor...
We recently showed how it is possible to use a cubic Galileon action to construct classical cosmolog...
Martin J, Peter P, Pinto-Neto N, Schwarz D. Passing through the bounce in the ekpyrotic models. PHYS...
International audienceFollowing recent claims relative to the question of large anisotropy productio...
We study a model for a non-singular cosmic bounce in N=1 supergravity, based on supergravity version...
Abstract We investigate the post-bounce background dynamics in a certain class of single bounce scen...
© 2016 IOP Publishing Ltd and Sissa Medialab srl.We explore dynamics of cosmological models with bou...
Abstract. We present a wide class of models which realise a bounce in a spatially flat Friedmann uni...
We investigate bouncing solutions in the framework of the nonsingular gravity model of Brandenberger...
In the context of a ghost free f(R,G) model, we present a non-singular cosmological scenario in whic...
One of the fundamental questions of theoretical cosmology is whether the Universe can undergo a nons...
International audienceWe consider the possibility to produce a bouncing universe in the framework of...
We present a detailed study of a simple scalar field model that yields non-singular cosmological sol...
We analyze the Galileon ghost condensate implementation of a bouncing cosmological model in the pres...
International audienceWe perform a detailed investigation of the simplest possible cosmological mode...
In bouncing cosmology, the primordial fluctuations are generated in a cosmic contraction phase befor...
We recently showed how it is possible to use a cubic Galileon action to construct classical cosmolog...
Martin J, Peter P, Pinto-Neto N, Schwarz D. Passing through the bounce in the ekpyrotic models. PHYS...
International audienceFollowing recent claims relative to the question of large anisotropy productio...
We study a model for a non-singular cosmic bounce in N=1 supergravity, based on supergravity version...
Abstract We investigate the post-bounce background dynamics in a certain class of single bounce scen...
© 2016 IOP Publishing Ltd and Sissa Medialab srl.We explore dynamics of cosmological models with bou...
Abstract. We present a wide class of models which realise a bounce in a spatially flat Friedmann uni...
We investigate bouncing solutions in the framework of the nonsingular gravity model of Brandenberger...
In the context of a ghost free f(R,G) model, we present a non-singular cosmological scenario in whic...
One of the fundamental questions of theoretical cosmology is whether the Universe can undergo a nons...
International audienceWe consider the possibility to produce a bouncing universe in the framework of...
We present a detailed study of a simple scalar field model that yields non-singular cosmological sol...
We analyze the Galileon ghost condensate implementation of a bouncing cosmological model in the pres...
International audienceWe perform a detailed investigation of the simplest possible cosmological mode...
In bouncing cosmology, the primordial fluctuations are generated in a cosmic contraction phase befor...
We recently showed how it is possible to use a cubic Galileon action to construct classical cosmolog...