Speaker
Dr
Kohei Kamada
(EPFL)
Description
Cosmic strings are line-like topological defects associated with symmetry breaking. Though it is often assumed that they are formed after inflation and enters so-called scaling regime at very early Universe, it is possible to let them enter scaling regime at a later time if phase transition takes place during inflation. Here we study its effect on the cosmological observables, in particular cosmic microwave background radiation, and show how it changes the predictions of the usual scenario.
Primary author
Dr
Kohei Kamada
(EPFL)
