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Dark Matter Waves - From the Cosmos to the Lab

Simons Foundation via YouTube

Overview

Explore the mysteries of invisible matter in this 50-minute lecture from the Simons Foundation, where physicist Mariangela Lisanti delves into the fascinating world of wave-like dark matter and its profound impact on the universe. Learn how this enigmatic form of matter, comprising the majority of all matter in existence, influences cosmic evolution and galactic distribution. Discover the concept of ultralight dark matter as a classical wave with macroscopic wavelength, and understand its implications within extensions to the Standard Model of particle physics. Follow the journey from the universe's birth to present day, examining how wave-like dark matter affects galactic dynamics and interacts with black holes. Gain insights into cutting-edge experimental efforts to detect these elusive particles on Earth, including innovative approaches like haloscopes and helioscopes. Explore key concepts such as galactic rotation, cosmic microwave background, wave-particle duality, and the local dark matter distribution while understanding the significance of phenomena like neutron electric dipole moment and axion interactions.

Syllabus

Intro
Galactic Rotation
Add Some (Dark) Matter
Large-Scale Structure
Cosmic Microwave Background
What is known About Dark Matter?
Outline
Galactic Evolution
The Smallest Galaxies
Wave-Particle Duality
Dark Matter Mass Range
The First Galaxies
Heating of Ultra-faint Dwarf Galaxies
Special Case Study
Neutron Electric Dipole Moment (EDM)
Analogy: Chemical Bonds
When is the PQ Symmetry Broken?
The Local Dark Matter Distribution
Axion Interactions with Neutrons
Axion Interactions with Photons
Haloscopes: Axions from the Halo
Helioscopes: Axions from the Sun
Upcoming Experimental Prospects
Conclusions
Acknowledgements

Taught by

Simons Foundation

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