24-27 November 2022
Karlsruhe Institute of Technology
Europe/Berlin timezone

The QSNET-Network of high-precision clocks and the quest for light dark matter.

26 Nov 2022, 16:00
Foyer (KIT Campus South)


KIT Campus South

KIT Campus map: https://www.kit.edu/campusplan/ Building: 30.22 Room: Foyer im 1. und 2. OG Address: Institute of Technology, Engesserstraße 7, 76131 Karlsruhe Coordinates: 49.01244, 8.41062
Poster Physics Posters Poster session


Saskia Kreienbaum (Humboldt-Universität zu Berlin)


Beyond the Standard Model, scalar field dark matter may induce distinct variations in fundamental constants, be it through temporal oscillations or transient changes. With a novel approach, the QSNET project aims to find evidence of new physics by linking observed variations in atomic transition frequencies in a network of ultraprecise atomic, highly charged ion (HCI) as well as molecular clocks to variations in both the fine-structure constant and the electron-to-proton mass ratio. Comparing two from up to seven clocks located at four English institutions in a fibre-linked networked approach, allows for the measurement of frequency ratios with unprecedented precision. Here we give a short overview of the physical background of QSNET, the proposed configuration and coupling of the different clocks, as well as their anticipated performance and scientific goals. Implementing the Lomb-Scargle method allows for a preliminary assessment of QSNET's potential prospects and limitations in achieving high detection confidence for low-mass scalar dark matter.

Category Particle / Astroparticle / Cosmology (Experiment)

Primary author

Saskia Kreienbaum (Humboldt-Universität zu Berlin)


Prof. Steven Worm (DESY) Dr. Ullrich Schwanke (Humboldt-Universität zu Berlin) Lakshmi Priya Kozhiparambil Sajith (DESY & Humboldt-Universität zu Berlin)

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