Probing Novel Dark Matter Substructure: From Galactic to Solar Scales

If dark matter particle masses are below the eV scale, they must be bosonic in nature. As a result, light scalar dark matter (LSDM) candidates exhibit wave-like properties that make DM halos fundamentally 'lumpy', with a significant amount of substructure on scales much smaller than the virial radius. In this talk I will outline the rapidly-evolving understanding of three categories of LSDM substructure: Quasiparticles; Solitons; and bound Solar/Earth Halos (relevant for particles in the mass range 10^{-17} eV < m < 10^{-8} eV). Both cosmological simulations and direct astrophysical observation inform the existence and properties of these substructures, and I will discuss the implications for a wide range of ongoing experimental efforts.

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https://zoom.us/j/95759068407