Speaker
Description
We present a study of the cosmic stability of a scalar dark matter candidate coupled to a pair of Majorana fermions using the Boltzmann equations. We incorporate quantum interactions, such as decay and annihilation processes into the evolution of the number and energy densities of this dark matter model. By numerically solving the system of coupled differential equations while considering full fermion and boson statistical factors, we show that the Pauli exclusion principle (or Pauli blocking) can extend the cosmic lifetime of this dark matter particle beyond the age of the universe. Additionally, in contrast to traditional decaying dark matter models that require extremely light masses to achieve such stability, this scenario allows for more reasonable mass values.