HIDDeN WEBINAR: "Dark matter scattering in dielectrics"

March 2, 2021
4:00pm to 5:00pm

On-Line

Specialist level
Speaker: 
Tongyan Lin
Institution: 
UC San Diego
Location&Place: 

On-Line

Abstract: 

Direct detection experiments are rapidly advancing in the search for sub-GeV dark matter. As energy thresholds become lower, the many-body physics of a target material becomes increasingly important to understand in determining the dark matter signal. In this talk, I will show how dark matter scattering in dielectric materials can be understood in terms of the dielectric response. This provides both a useful conceptual framing, and also allows us to calculate several new effects. I will then discuss two applications: screening effects for dark matter electron scattering, and the Migdal effect in semiconductors.