We analyze the Galileon ghost condensate implementation of a bouncing cosmological model in the presence of a non negligible anisotropic stress. We exhibit its structure, which we find to be far richer than previously thought. In particular, even restricting attention to a single set of underlying microscopic parameters, we obtain, numerically, many qualitatively different regimes: depending on the initial conditions on the scalar field leading the dynamics of the universe, the contraction phase can evolve directly towards a singularity, avoid it by bouncing once, or even bounce many times before settling into an ever-expanding phase. We clarify the behavior of the anisotropies in these various situations
We consider a simple cosmological model that includes a long ekpyrotic contraction stage and smooth ...
We present a detailed study of a simple scalar field model that yields non-singular cosmological sol...
International audienceWe study a cosmological scenario in which inflation is preceded by a bounce. I...
International audienceWe analyze the Galileon ghost condensate implementation of a bouncing cosmolog...
We examine the evolution of a closed, homogeneous and anisotropic cosmology subject to a variation o...
International audienceFollowing recent claims relative to the question of large anisotropy productio...
We study the behaviour of Bianchi class A universes containing an ultra-stiff isotropic ghost field ...
We show that it is possible to realize a cosmological bouncing solution in an anisotropic but homoge...
A single field matter bounce with an exponential potential is numerically studied. The quantum bounc...
We study a model for a non-singular cosmic bounce in N=1 supergravity, based on supergravity version...
Bouncing cosmologies are often proposed as alternatives to standard inflation for the explanation of...
We explicitly confirm that spatially flat non-singular bouncing cosmologies make sense as effective ...
In bouncing cosmology, the primordial fluctuations are generated in a cosmic contraction phase befor...
Bouncing cosmologies, suggested by string/M-theory, may provide an alternative to standard inflation...
International audienceWe perform a detailed investigation of the simplest possible cosmological mode...
We consider a simple cosmological model that includes a long ekpyrotic contraction stage and smooth ...
We present a detailed study of a simple scalar field model that yields non-singular cosmological sol...
International audienceWe study a cosmological scenario in which inflation is preceded by a bounce. I...
International audienceWe analyze the Galileon ghost condensate implementation of a bouncing cosmolog...
We examine the evolution of a closed, homogeneous and anisotropic cosmology subject to a variation o...
International audienceFollowing recent claims relative to the question of large anisotropy productio...
We study the behaviour of Bianchi class A universes containing an ultra-stiff isotropic ghost field ...
We show that it is possible to realize a cosmological bouncing solution in an anisotropic but homoge...
A single field matter bounce with an exponential potential is numerically studied. The quantum bounc...
We study a model for a non-singular cosmic bounce in N=1 supergravity, based on supergravity version...
Bouncing cosmologies are often proposed as alternatives to standard inflation for the explanation of...
We explicitly confirm that spatially flat non-singular bouncing cosmologies make sense as effective ...
In bouncing cosmology, the primordial fluctuations are generated in a cosmic contraction phase befor...
Bouncing cosmologies, suggested by string/M-theory, may provide an alternative to standard inflation...
International audienceWe perform a detailed investigation of the simplest possible cosmological mode...
We consider a simple cosmological model that includes a long ekpyrotic contraction stage and smooth ...
We present a detailed study of a simple scalar field model that yields non-singular cosmological sol...
International audienceWe study a cosmological scenario in which inflation is preceded by a bounce. I...