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T: Fachverband Teilchenphysik

T 110: Search for Dark Matter 5

T 110.4: Vortrag

Freitag, 8. März 2024, 09:45–10:00, Geb. 30.22: Gaede-HS

Cavity response to time dependent dark matter signals — •Althea Cappelli, Elina Fuchs, and Klemens Hammerer — Leibniz Universität Hannover, Hannover

The search for Dark Matter remains a prominent focus in particle physics. There are already good Dark Matter candidates, one positive example being the Goldstone bosons axions, which also offer a resolution to the strong CP problem. However, axions have not been experimentally found yet, compounded by the challenge of determining their mass, a free variable. While some experiments target specific mass ranges, the range to scan is still very broad. For putting more bounds, cavities emerge as a helpful tool, as they can probe different masses using their resonance frequency. Although much progress has been done in the past couple of years, further optimizations can be done, using for instance different and/or entangled cavities. Moreover, such cavity experiments offer a dual-purpose platform, expanding their probing also to gravitational waves from primordial black holes, an additional Dark Matter candidate. Using the Heisenberg equations for a two cavity experiment derived in "Cavity entanglement and state swapping to accelerate the search for axion dark matter" by K. Wurtz et al, it is interesting to look at the response of the output cavity signal when putting different time dependent signals for different Dark Matter candidates in the equations. Evaluating the cavity's susceptibility to the signal given a certain noise could lead, together with parameter estimation of the constants, to predictions for experimental optimizations, enhancing the sensitivity to Dark Matter signals.

Keywords: Axions; Dark matter; Primordial black holes; Cavity response