Speaker
Description
The ultralight dark matter (ULDM) model proposes as DM particles candidates bosons with typical mass $10^{-22}$ eV, such that its de Broglie wavelength is of galactic scale ($\sim$kpc). The ULDM was among the models, that were proposed to resolve CDM tensions on the small scales, such as core-cusp and missing satellite problem. However last times it faces some difficulties between observed spiral galaxies rotation curves and the model’s predictions, if one takes into account core/host halo mass relation and the relation between mass and radius of a central core, that follows from simulations. In the present work, we consider complex scalar field minimally coupled to gravity with $\phi^6$ self-interaction potential. We will discuss this model’s predictions including DM density distribution in the galactic halo and its potential regarding solving the above-mentioned problems.
