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

Session

Friday - Session 1

Mar 22, 2024, 9:00 AM

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

93. Hydrodynamic backreaction forces in expanding bubbles

Carlos Tamarit

3/22/24, 9:00 AM

In first-order cosmological phase transitions, it has been commonly accepted that subluminal bubble expansion requires out-of-equilibrium interactions with the plasma which are captured by friction terms in the equations of motion for the scalar field. This has been disputed in works pointing out subluminal velocities in local equilibrium arising either from hydrodynamic effects in...

43. Simple computations for bubble wall velocities

Miguel Vanvlasselaer (VUB)

3/22/24, 9:30 AM

4. Gravitational waves, astrophysical and collider phenomenology

The bubble wall velocity is a critical parameter for estimating the gravitational wave signal coming the phase transitions in the early universe. The most precise computations are usually quite involved and require time, which can make then inconvenient for the large use to BSM models. In this talk, I will present two limits, the local thermal equilibrium limit and the relativistic limit, in...

45. Gravitational waves from the QCD chiral phase transition in a supercooled Universe

Daniel Schmitt (Goethe University, Frankfurt)

3/22/24, 9:55 AM

2. Non-perturbative regime: Strongly coupled DM and quarkonia systems, phase transitions of QCD and new physics particles in the early Universe

Theories beyond the Standard Model (BSM) with classical scale invariance predict an intriguing thermal history of the early Universe. Due to the absence of dimensionful terms at tree level in these models, the electroweak phase transition (EWPT) can be significantly delayed, inducing a period of thermal inflation supercooling the Universe. As the SM quarks may remain massless at the QCD scale,...

42. Probing dark sectors with atomic spectroscopy

Clara Peset (Complutense University of Madrid)

3/22/24, 10:15 AM

1. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter

The past two decades have been characterised by extraordinary accomplishments in the control of matter and light. This has opened up new avenues for atomic, molecular and optical physics including novel tests of physics beyond the Standard Model. The combined use of effective field theories, precision computations and highly accurate experimental data makes spectroscopy a competent and...