- July 1, 2021, 10:00 am US/Central
Presented by Dan Green, UC San Diego
Title: Messengers from the Early Universe: Cosmic neutrinos and Other Light Relics
Abstract: The cosmic neutrino background is one of the remarkable predictions of the hot Big Bang. I will explain this theoretical prediction and what it can tell us about neutrinos and other kinds of light particles. I will then discuss the implications for cosmological observables. First I will discuss how the energy density of neutrinos in the early universe is measured by the cosmic microwave background, confirming the predictions of the hot Big Bang. Then I will discuss how the non-zero neutrino mass affects the growth of structure at late times, enabling a cosmological measurement of the sum of neutrinos masses. I will conclude by discussing some implications for beyond the Standard Model physics.
The Neutrino Physics Center Summer Presentations are informal lectures for students at all levels interested in finding out more about neutrino physics in general, with some emphasis on neutrino experiments being carried out at Fermilab. The lectures are geared towards undergraduate and graduate students.
Regularly scheduled Neutrino University lectures will be held on Thursdays 10:00-11:00am CT online on Zoom. Please subscribe to our mailing list (email@example.com) to get lecture announcements and Zoom connection information by following the instructions here or by emailing the organizers.