Dartmouth Events

Physcis and Astronomy - Cosmology Seminar - Azadeh Maleknejad, CERN

Title: "Is Our Universe the Remnant of Chiral Anomaly in Inflation?"

Thursday, March 4, 2021
4:00pm – 5:00pm
Zoom: Email for link and password.
Intended Audience(s): Public
Categories: Lectures & Seminars

Abstract:
Modern cosmology has been remarkably successful in describing
the Universe from a second after the Big Bang until today. However,
its physics before that time is still much less certain. It
profoundly involves particle theory beyond the Standard Model to explain
long-standing puzzles: the origin of the observed matter
asymmetry, nature of dark matter, and cosmic inflation. In this talk, I
will explain that fractions of a second after the Big Bang, relic
SU(2)$_R$ gauge field with its axion in inflation can possibly relate
and explain these seemingly unrelated pillars of modern cosmology. Thus,
it can naturally explain the observed coincidences among
cosmological parameters. The baryon asymmetry and dark matter today are
remnants of a pure quantum effect (chiral anomaly) in inflation, which,
thanks to flavor effects, are memorized by cosmic evolution. As a
smoking gun, this setup has a robust observable signature on the GW
background.

For more information, contact:
Tressena Manning
603-646-2854

Events are free and open to the public unless otherwise noted.