Cosmo: Wednesday, 04/10/2023, 11:00
Oyvind Christiansen (University of Oslo)
Late-time domain walls in cosmological simulations
The study of domain walls and topological defects has a rich history in cosmology and they provide a wide range of novel phenomenology to experimentally test them. The motivations that they have been studied under include seeding the initial overdensities for structure formation, driving inflation, seeding a stochastic gravitational wave background like the one in nanograv, and providing the skeleton for the formation of larger structures than you would expect in LCDM. They have furthermore been linked to resolutions of some of the late-time cosmological tensions. I will in this talk present the asymmetron dark energy model, that exhibits late-time cosmological domain walls, and our implementation of it in the cosmological N-body code gevolution. I present some details on the domain walls' dynamics, and our progress at resolving the dynamical scale of relevance to make predictions on their stability, effect on clustering, and some observational signatures.
Cosmo: Wednesday, 18/10/2023, 11:00
Kara Farnsworth (University of Geneva)
TBA
TBA
Cosmo: Wednesday, 15/11/2023, 11:00
Francesca Calore (LAPTH -- Laboratoire d'Annecy-le-Vieux de Physique Théorique -- CNRS)
TBA
TBA
Cosmo: Wednesday, 06/12/2023, 11:00
Federico Lelli (Arcetri Astrophysical Observatory - INAF, Italy)
TBA
TBA
Cosmo: Wednesday, 13/12/2023, 11:00
Matthew Lewandowski (ETH Zürich, Institute of Theoretical Physics)
TBA
TBA