| Betreff: | DQ-mat Colloquium by Gilad Perez at PTB Baunschweig, 09 January 2025, 4 pm |
|---|---|
| Datum: | Fri, 3 Jan 2025 07:38:06 +0100 |
| Von: | Birgit Gemmeke <birgit.gemmeke@QUEST.UNI-HANNOVER.DE> |
| Antwort an: | Birgit Gemmeke <birgit.gemmeke@QUEST.UNI-HANNOVER.DE> |
| An: | MEMBERS-DQMAT@LISTSERV.UNI-HANNOVER.DE |
Dear DQ-mat members and interested scientists,
We are wishing you a Happy New Year and are
pleased to announce the next colloquium which will take place
on
Thursday, 09 January, 2025
PTB Braunschweig,Vieweg Building, Room 133
16:00-17:30 Colloquium by Prof. Gilad Perez, Weizmann Institute of Science, Israel
Title: Preparing for the Thorium-229 revolution
Abstract: The
remarkable precision of optical atomic clocks enables new
applications and offers sensitivity to novel and exotic
physics. In this talk I will explain the motivation and
operating principles of a multiplexed strontium optical
lattice clock, which consists of two or more atomic ensembles
of trapped, ultra-cold strontium in one vacuum chamber. This
miniature clock network enables us to bypass the primary
limitations to typical atomic clock comparisons and achieve
new levels of precision.
After a brief introduction related to ultralight (pseudo)
scalar dark matter, we shall describe the current status of
searches for ultralight dark matter (UDM). We explain why modern
clocks can be used to search for both scalar and axion dark
matter fields. We review existing and new types of
well-motivated models of UDM and argue that they all share one
key ingredient - their dominant coupling is to the QCD/nuclear
sector. This is very exciting as we are amidst a revolution in
the field of dark matter searches as laser excitation of Th-229
with effective precision of 1:1013
has been recently achieved, which as we show, is already probing
uncharted territory of models. Furthermore, Th-229-based nuclear
clock can potentially improve the sensitivity to physics of dark
matter and beyond by factor of 1010.
To what extent we trust this enhancement factor and what are the
potential implications will be also briefly discussed.
Access data for the transfer:
Zoom Access: https://us04web.zoom.us/j/932734874
This talk is part of the "Virtual Seminar on
Precision Physics and Fundamental Symmetries" series and of the
SFB DQ-mat colloquium series:
https://indico.cern.ch/category/12183/
Best regards,
Birgit Gemmeke
-- Birgit Gemmeke Leibniz Universität Hannover QUEST-LFS Callinstr. 36 30167 Hannover Germany phone +49 511 762.17072 | fax +49 511 762.17043 birgit.gemmeke@quest.uni-hannover.de office: Appelstr. 2, room 115