Résumé / Abstract Journal-club_Doctorants

Journal-club Doctorants / Journal-club PhD students

« Physics of the early universe : inflation and reheating »

Lucas Pinol
Institut d'Astrophysique de Paris (Paris, France)

Where does every thing come from? Well, from the beginning of
the Universe of course! During my talk, I will review the current
state-of-the-art regarding the physics of the early universe. I will
motivate inflation as a simple and elegant way to explain not only the
homogeneity of the CMB, but also the statistics of the small fluctuations
than we observe in it. These tiny fluctuations are of quantum origine, and
they are the primordial seeds to the enormous inhomogeneities that we
observe nowadays as large-scale structures. I will explain why the
simplest model of inflation is however not viable theoretically and I will
try to convince you that one needs to dig further in more sophisticated
but more realistic theories. Time permitting, I will also explain the role
of reheating as a transition from inflation to the radiation-dominated era
and the production of Standard Model particles. These reviews will be
punctuated by insights in some of my research topics including multi-field
inflation with an internal geometry, stochastic treatment of the
inflationary fluctuations, as well as multi-fluid realistic reheating.
Please come to learn more about these very interesting topics!
vendredi 1er mars 2019 - 16:00
Salle Entresol Daniel Chalonge, Institut d'Astrophysique
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