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Magnetic fields appear everywhere in the universe. From stars and galaxies, all the way to
galaxy clusters and remote protogalactic clouds, magnetic fields of considerable strength …

We investigate the consequences of an imperfect dark energy fluid on the large scale
structure. A phenomenological three parameter fluid description is used to study the effect of …

Cosmology, high-energy physics and astrophysics are today converging to the study of large
scale magnetic fields. While the experimental evidence for the existence of large scale …

We consider the generation of large scale magnetic fields in slow-roll inflation. The inflaton
field is described in a supergravity framework where the conformal invariance of the …

We consider several new classes of viable vector field alternatives to the inflaton and
quintessence scalar fields. Spatial vector fields are shown to be compatible with the …

We investigate a string-inspired dark energy scenario featuring a scalar field with a coupling
to the Gauss-Bonnet invariant. We discuss extensively the cosmological and astrophysical …

The generation of large-scale magnetic fields is studied in dilaton electromagnetism in
inflationary cosmology, taking into account the dilaton's evolution throughout inflation and …

We compute the gravity waves induced by anisotropic stresses of stochastic primordial
magnetic fields. The nucleosynthesis bound on gravity waves is then used to derive a limit …

Primordial magnetic fields and massive neutrinos can leave an interesting signal in the CMB
temperature and polarization. We perform a systematic analysis of general perturbations in …