![[Search]](/static/images/search.gif){kind=small}
![[A-Z Index]](/static/images/az.gif){kind=small}
![[Contact]](/static/images/contact.gif){kind=small}
![[University of Cambridge]](/static/images/identifier2.gif){kind=small}
![[Talks.cam]](/static/images/talkslogosmall.gif)
Geraldine Servant - DESY
Monday 02 May 2022, 13:00-14:00
Gravitational-wave probes of axion-like-particles
- đ¤ Speaker: Geraldine Servant - DESY
- đ Date & Time: Monday 02 May 2022, 13:00 - 14:00
- đ Venue: CMS, Pav. B, CTC Common Room (B1.19) [Potter Room]
Abstract
It is usually assumed that the axion starts oscillating around its minimum from its initially frozen position. However, the early dynamics of the Peccei-Quinn field can induce a large kinetic energy in the axion field, which starts rotating during its early evolution, before it gets trapped in one minimum. This can modify the equation of state of the universe by triggering a kination era before the axion acquires its mass. This imprints a smoking-gun gravitational-wave peak on the primordial gravitational-wave background in the sensitivity bands of LISA , ET, and CE. Future gravitational-wave observatories will thus offer a new window on axion models. I will present explicit realisations. I will also discuss how this dynamics opens up the allowed parameter space for ALP dark matter and other observational consequences.
Series This talk is part of the Cosmology Lunch series.
Included in Lists
- All CMS events
- bld31
- Cambridge Astronomy Talks
- CMS Events
- CMS, Pav. B, CTC Common Room (B1.19) [Potter Room]
- Cosmology, Astrophysics and General Relativity
- Cosmology lists
- Cosmology Lunch
- DAMTP info aggregator
- Interested Talks
- Kavli Institute for Cosmology Talk Lists
- Priscilla
Note: Ex-directory lists are not shown.