Orateur
Kenza ZEGHARI
(Université Pierre et Marie Curie, Paris 6)
Description
We study Bianchi cosmologies coupled to a matter source that has the field theoretical description of a solid. Models
of solid inflation are known for not being very efficient in diluting away anisotropy. While confirming this fact, our study finds another potential feature of Solid inflation, namely a ``rotation” of the principal axes of the expansion.
Such a rotation is not just a gauge artifact as in the case of Bianchi models alone or coupled to homogeneous scalar fields. Due to the anisotropic stress generated by the solid, rotation becomes a real dynamical quantity.
