2nd Edition of the Workshop 'Quarkonia meet Dark Matter' (QMDM)

Session

Thursday - Session 3

Mar 21, 2024, 1:50 PM

Auditorium (Institute for Advanced Study, Technical University of Munich)

39. Gravitational waves from cosmological phase transitions

Jorinde van de Vis (Leiden University)

3/21/24, 1:50 PM

4. Gravitational waves, astrophysical and collider phenomenology

In many extensions of the Standard Model, the universe underwent one or several first order phase transitions. Such phase transitions proceed via the formation and collision of bubbles. The bubble collisions can source a stochastic gravitational wave background signal. In the case of the electroweak phase transition, the characteristic frequency would fall right in the sensitivity band of...

29. Upper Bound on Thermal Gravitational Wave Backgrounds from Hidden Sectors

Yannis Georis

3/21/24, 2:25 PM

4. Gravitational waves, astrophysical and collider phenomenology

Hot viscous plasmas unavoidably emit a gravitational wave background, similar to the electromagnetic black body radiation. We study the contribution from hidden particles to the diffuse background emitted by the primordial plasma in the early universe. While this contribution can easily dominate over that from Standard Model particles, we find that both are capped by a generic upper bound that...

94. QCD theta-parameter in infinite and finite volumes

Björn Garbrecht (TUM)

3/21/24, 3:00 PM

Taking Euclidean space as an analytic continuation of Minkowski
spacetime, topological sectors in QCD follow from the principle of
finite action (or fluctuations about finite action configurations).
Thus, the limit of spacetime volume must be taken before summing over
integer topological sectors, leaving the correlation functions
parity-even and theta immaterial. It is now of interest to...