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Humboldt-Universität zu Berlin - Faculty of Mathematics and Natural Sciences - Theoretical Particle Physics - Lattice Field Theory

Prof. Dr. Pedro Schwaller (Mainz U)

Audible Axions
What
  • QFT Colloquium
When Jul 01, 2019 from 03:15 to 04:15 (Europe/Berlin / UTC200) iCal
Where Christian-Gerthsen-Hörsaal, Lise-Meitner-Haus, Newtonstraße 15, 12489 Berlin

Audible Axions

 

Gravitational wave observations provide a new and unique window into the early universe. I will start by explaining why this is the case, and give an overview of new physics scenarios that give rise to a stochastic gravitational wave background in the early universe, and therefore may be testable by future gravitational wave observations. Then I will focus on the audible axion scenario, a class of axion models whose cosmological evolution leaves an observable imprint in the gravitational wave background. This allows a new and unique probe of very high scale axions, with symmetry breaking scales close to the GUT or string scale.

 

Coffee and cookies will be offered half an hour before the start of the colloquium.