Name: Gravitational Waves from the Early Universe
Start: 2019-08-26T09:00:00+02:00
End: 2019-09-20T18:00:00+02:00
Location: Nordita, Stockholm

Monday, 26 August 2019

10:00 Welcome and introductory remarks
Welcome and introductory remarks
10:00 - 10:15
Room: 122:026
10:15 Gravitational wave energy budget in strongly supercooled phase transitions - Marek Lewicki
Gravitational wave energy budget in strongly supercooled phase transitions
- Marek Lewicki
10:15 - 11:05
Room: 122:026 We derive efficiency factors for the production of gravitational waves through bubble collisions and plasma-related sources in strong phase transitions, and find the conditions under which the bubble collisions can contribute significantly to the signal. We illustrate our findings in two examples, the Standard Model with an extra $|H|^6$ interaction and a classically scale-invariant $U(1)_{\rm B-L}$ extension of the Standard Model. The contribution to the GW spectrum from bubble collisions is found to be negligible in the $|H|^6$ model, whereas it can play an important role in parts of the parameter space in the scale-invariant $U(1)_{\rm B-L}$ model. In both cases the sound-wave period is much shorter than a Hubble time, suggesting a significant amplification of the turbulence-sourced signal. We find, however, that the peak of the plasma-sourced spectrum is still produced by sound waves with the slower-falling turbulence contribution becoming important off-peak.
13:00 Registration
Registration
13:00 - 13:50
Room: 122:026
14:00 Gravitational wave spectra from primordial magnetohydrodynamic turbulence - Alberto Roper Pol (University of Colorado. LASP)
Gravitational wave spectra from primordial magnetohydrodynamic turbulence
- Alberto Roper Pol (University of Colorado. LASP)
14:00 - 14:50
Room: 122:026
Tuesday, 27 August 2019

10:00 A Real-Time Picture of False Vacuum Decay
A Real-Time Picture of False Vacuum Decay
10:00 - 10:50
Room: 122:026

14:00 TBC
TBC
14:00 - 14:50
Room: 122:026

16:30 Wine & cheese, BBQ, Welcome from Nordita director Niels Obers
Wine & cheese, BBQ, Welcome from Nordita director Niels Obers
16:30 - 19:00
Room: 122:026
Wednesday, 28 August 2019
10:00 Latest observational signatures of cosmic strings: Gravitational waves and particle emission - Pierre Auclair (APC)
Latest observational signatures of cosmic strings: Gravitational waves and particle emission
- Pierre Auclair (APC)
10:00 - 10:50
Room: 122:026
13:30 Nordita Astrophysics Seminar
Nordita Astrophysics Seminar
13:30 - 14:20
Room: 122:026 https://agenda.albanova.se/conferenceDisplay.py?confId=6809
15:30 Gravitational wave generation in a viable scenario of inflationary magnetogenesis - Ramkishor Sharma (University of Delhi)
Gravitational wave generation in a viable scenario of inflationary magnetogenesis
- Ramkishor Sharma (University of Delhi)
15:30 - 16:20
Room: 122:026
Thursday, 29 August 2019
10:00 Formation and evolution of primordial black hole binaries - Ville Vaskonen (Kings College, London)
Formation and evolution of primordial black hole binaries
- Ville Vaskonen (Kings College, London)
10:00 - 10:50
Room: 122:026
14:00 No talk
No talk
14:00 - 14:50
Room: 122:026
Friday, 30 August 2019
10:00 Gravitational Waves: The stochastic background and its anisotropies. - Mairi Sakellariadou (King's College London)
Gravitational Waves: The stochastic background and its anisotropies.
- Mairi Sakellariadou (King's College London)
10:00 - 10:50
Room: 122:026
14:00 Stochastic gravitational waves from preheating - Jing Liu (Institute of Theoretical Physics, Chinese Academy of Sciences)
Stochastic gravitational waves from preheating
- Jing Liu (Institute of Theoretical Physics, Chinese Academy of Sciences)
14:00 - 14:50
Room: 122:026
15:30

15:30 - 17:00
Room: 122:026
Saturday, 31 August 2019
Sunday, 1 September 2019