Speaker
Daniel Račko
Description
In this talk, I will discuss how a small anisotropic “solid remnant” left over after inflation could affect the early Universe. This model is inspired by solid inflation and its generalizations, in which matter is described by a triplet of fields. In our model, the full internal global Euclidean symmetry of this triplet is broken, leading to anisotropic expansion of the Universe. Superhorizon scalar and vector perturbations grow, while the behavior of tensor perturbations remains the same as in the standard case of a Universe filled only with radiation. The obtained results improve the agreement between observational data and the theoretical predictions of solid inflation in the case of suppressed nonlinear effects.
Authors
Daniel Račko
Peter Mészáros
(Department of Theoretical Physics, Comenius University, Bratislava, Slovakia)