3er Encuentro Julio Garavito

Extended FLRW models, non-Abelian gauge fields and the weak cosmological principle

14 nov 2024, 12:10

20m

Escuela de Física (Universidad Industrial de Santander)

Charla paralela Charlas Paralela II

Ponente

Nicolás Hernández Beltrán (Universidad Industrial de Santander)

Descripción

In this work, we shall construct a little forgotten subset of the Bianchi models: the extended Friedmann-Lema\^itre-Robertson-Walker (FLRW) models, defined as cosmological models with underlying anisotropic Bianchi geometry that nevertheless expand isotropically and can be mapped onto a reference FLRW model with the same expansion history. In order to establish the stability and naturalness of such models, we consider the dynamics of non-Abelian gauge fields attached to an imperfect fluid that possesses anisotropic stresses. As a result, we expect to obtain a generalisation of the case that involves just Abelian gauge fields.