Résumé / Abstract Journal-club_GReCO

Séminaire / Seminar GReCO

« Origin of probabilities and their application to the multiverse »

Andreas Albrecht
Dept. Physics, Univ. California (Davis, California, Etats-Unis d'Amérique)

I argue using simple models that all successful practical uses of
probabilities originate in quantum fluctuations in the microscopic
physical world around us, often propagated to macroscopic scales. Thus I
claim there is no physically verified fully classical theory of
probability. I comment on the general implications of this view, and
specifically question the application of classical probability theory to
cosmology in cases where key questions are known to have no quantum
answer.  Overall, this approach offers a certain disciplined perspective
on probabilities in physical theories which may yield progress on measure
problems traditionally associated with eternal inflation.

Based on https://arxiv.org/abs/1212.0953
lundi 11 septembre 2023 - 11:00
Salle des séminaires Évry Schatzman
Institut d'Astrophysique de Paris
Pages web du séminaire / Seminar's webpage