Caltech Logo

Physics Colloquium

Thursday, October 22, 2020
4:00pm to 5:00pm
Add to Cal
Online Event
Search for Dark Matter with Atomic Precision Spectroscopy
Vladan Vuletić, MIT,

The Standard Model of particle physics describes virtually all measurements of elementary particles exquisitely well, and yet various astrophysical evidence points to new physics beyond the Standard Model. Recently it has been proposed to search for particles outside the Standard Model in an intermediate mass range (100 eV to 100 MeV) by means of precision isotope shift spectroscopy on narrow optical transitions. The exquisite precision of optical spectroscopy thus allows one to access high-energy physics with experiments at the eV scale. We report nonlinearities in so-called King plots of measured isotope shifts for trapped Yb+ ions. Such nonlinearities can indicate physics beyond the Standard Model, or be due to higher-order nuclear effects within the Standard Model. We also discuss how future more precise measurements on more transitions, in combination with improved atomic-structure calculations, can be used to distinguish between effects within and outside the Standard Model.Check back for webinar information.


Please click the link below to join the webinar:
https://caltech.zoom.us/j/82624277023

Webinar ID: 826 2427 7023

Or iPhone one-tap (US): 

+16699006833,,82624277023#  or 

+12532158782,,82624277023# 

Or Telephone:
Dial(for higher quality, dial a number based on your current location):

US: +1 669 900 6833  or 

+1 253 215 8782  or 

+1 346 248 7799  or 

+1 646 558 8656  or 

+1 301 715 8592  or 

+1 312 626 6799 

International numbers available: https://caltech.zoom.us/u/kb4GhUuYMl

Or an H.323/SIP room system:
    H.323: 
    162.255.37.11 (US West)
    162.255.36.11 (US East)
    115.114.131.7 (India Mumbai)
    115.114.115.7 (India Hyderabad)
    213.19.144.110 (Amsterdam Netherlands)
    213.244.140.110 (Germany)
    103.122.166.55 (Australia)
    149.137.40.110 (Singapore)
    64.211.144.160 (Brazil)
    69.174.57.160 (Canada)
    207.226.132.110 (Japan)
    Meeting ID: 826 2427 7023
    SIP: 82624277023@zoomcrc.com