Göttingen 2025 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 7: Cosmo I, Relastro II, GW II

GR 7.6: Talk

Wednesday, April 2, 2025, 15:10–15:30, ZHG008

Stochastic gravitational wave background from Cosmic B-L Symmetry breaking — •Alexander Schneider, Gudrid Moortgart-Pick, and Tom Krokotsch — University of Hamburg, Hamburg, Germany

The stochastic gravitational wave background could be a window in the early universe, possibly even before the decoupling of the cosmic microwave background. Studying in detail such a stochastic gravitational background is therefore also a possible way to find physics beyond the standard model.

A proposed background rises due to the spontaneous B-L symmetry breaking, occurring around the grand unification scale in certain cosmogical models.

In the talk, we concentrate in particular on the question, whether the gravitational waves produced in such an event could be detected with future high frequency detectors.

Keywords: High frequency Gravitational Waves; Phase Transition; Stochastic Background