Date and time: Tuesday, March 2nd at 16:00 CET
Speaker: Tongyan Lin (UC San Diego)
Title: Dark matter scattering in dielectrics
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.