Karlsruhe 2024 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 118: Gravitational waves 2
T 118.1: Vortrag
Freitag, 8. März 2024, 09:00–09:15, Geb. 30.23: 6/1
Correlating dark matter and gravitational waves from a dark Higgs mechanism — Torsten Bringmann1, Tomás Gonzalo2, Felix Kahlhoefer2, •Jonas Matuszak2,3, and Carlo Tasillo4 — 1Department of Physics, University of Oslo, Box 1048, N-0316 Oslo, Norway — 2Institute for Theoretical Particle Physics (TTP), Karlsruhe Institute of Technology (KIT), 76128 Karlsruhe, Germany — 3Institute for Theoretical Particle Physics and Cosmology (TTK), RWTH Aachen University, D-52056 Aachen, Germany — 4Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
The next generation of gravitational wave (GW) detectors open up a new window to probe physics beyond the Standard Model in the early universe. An intriguing possibility are first order phase transitions in a dark sector giving rise to a stochastic GW background. In this talk I will discuss GW signals from a dark sector with a spontaneously broken gauge symmetry and a stable dark fermion. Requiring the freeze-out mechanism to reproduce the observed relic abundance of dark matter constrains the GW signal frequency to lie within the LISA sensitivity range. Finally I will consider a scenario with feeble coupling between the dark and Standard Model sector, allowing the temperatures of the two sectors to evolve independently during the phase transition.
Keywords: dark matter; gravitational waves; cosmological phase transitions; particle physics - cosmology connection