Karlsruhe 2024 – scientific programme
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T: Fachverband Teilchenphysik
T 95: Gravitational waves 1
T 95.4: Talk
Thursday, March 7, 2024, 16:45–17:00, Geb. 30.23: 6/1
Ultra high-frequency Gravitational Waves as Messengers of New Physics — •Lars Fischer1, Tom Krokotsch1, Gudrid Moortgat-Pick1,2, Michel Paulsen1, Krisztian Peters2, and Marc Wenskat1 — 1Universität Hamburg, Hamburg, Germany — 2Deutsches Elektronen Synchrotron DESY, Hamburg, Germany
Gravitational wave searches have been strongly motivated for frequencies below O(10 kHz). However, Standard Model and beyond Standard Model sources for gravitational waves (GW) could also emit at high (kHz-MHz) and ultra high-frequencies (MHz-GHz). But current state of the art GW detector technologies are not capable of pushing their sensitivities to frequencies above O(10 kHz). New detection concepts are thus needed to set upper limits for cosmological models or to find evidence for sources beyond the Standard Model.
Superconducting radio frequency (SRF) cavities as precise quantized electromagnetic systems are well suited to probe interactions between GW and photons in the MHz to GHz regime. Although sources at ultra high-frequencies impose new challenges on this detector concept, observed signals would provide evidence for physics beyond the Standard Model or for a cosmic gravitational microwave background. A search strategy in this regime could aim for exotic compact objects or be optimized for the detection of cosmological GW backgrounds, from e.g. additional scalar fields.
This talk will emphasise the opportunities of GW search at ultra high-frequencies for particle physics and make a connection between GW-photon interactions and SRF cavity detectors.
Keywords: SRF Cavities; Gravitational Waves; Search for Dark Matter; Beyond Standard Model