Conveners
Morning 22
- Andrew Sonnenschein (Fermilab)
Dr
Maxim Goryachev
(University of Western Australia)
04/06/2019, 11:05
Oral
Due to its extraordinary precision reaching $10^{-18}$ level, frequency metrology is one of the most sensitive tools used in many tests of fundamental physics such as detection of violations of the Lorentz Invariance and special relativity, drifts of the fine structure constant, etc. In this presentation, we consider how to adopt these tool for axion searches and demonstrate the key...
Mr
Andrea Palessandro
(CP3-Origins)
04/06/2019, 11:25
Oral
Particles in a yet unexplored dark sector with sufficiently large mass and
small gauge coupling may form purely gravitational atoms (quantum gravitational
bound states) with a rich phenomenology. Near-Planckian atoms decay to gravitons immediately after being produced in the very early universe, creating a nearly monochromatic, isotropic and highly energetic gravitational wave signal. If...
Dr
Scott Kravitz
(Lawrence Berkeley National Lab)
04/06/2019, 11:45
Oral
As noble liquid time projection chambers grow in size, it becomes more difficult to maintain sufficiently large drift field and efficient prompt light collection, both of which are important for dark matter detector performance. I will report on first results from two new systems (XeBrA and IBEX) at Lawrence Berkeley National Laboratory, designed for investigations of high voltage and light...
Prof.
Erika Garutti
(University of Hamburg)
04/06/2019, 12:05
Oral
The Axion is the hypothetical low-mass boson predicted by the Peccei-Quinn mechanism solving the strong CP problem. It is naturally also a cold dark matter candidate, thus it could simultaneously solve two major problems of nature. Up to recently, there was no existing experimental effort aiming to detect QCD axions in the mass range around 100 ueV, preferred by models in which the...
Dr
Erik Lentz
(University of Goettingen)
04/06/2019, 12:25
Oral
It was recently shown that axion dark matter, as a highly-correlated Bose fluid, contains extra-classical physics on super-de Broglie and cosmological length scales. The extra-classical physics comes in the form of an exchange-correlation interaction, induced by the constraints of symmetric particle exchange and inter-axion correlations from self-gravitation. Exchange-correlation physics...
Dr
Claudio Gatti
(INFN)
04/06/2019, 12:45
Oral
To account for the dark matter content in our Universe, post-inflationary scenarios predict for the QCD axion a mass in the range ($10-10^3$) $\mu$eV. Searches with haloscope experiments in this mass range require the monitoring of resonant cavity modes with frequency above 5 GHz, where several experimental limitations occur due to linear amplifiers, small volumes, and low quality factors of...
