| Abstract: |
Compact objects, like neutron stars and black holes, offer a unique setting to investigate the biggest puzzles in physics, as they probe strong gravitational fields and may be the only possible way to observe dark particles. With the recent discovery of gravitational waves, we now have an uncharted way to study such extreme environments, potentially shedding light on those fundamental issues. This talk focuses on fermion soliton stars, a class of compact objects that emerge from a theory in which a scalar field couples with fermions via a Yukawa interaction, resulting in an effective fermion mass that depends on the fluid properties. We elucidate the fundamental features of this model and its links to the Standard Model and beyond. Moreover, we provide distinctive signatures of the model in the gravitational wave signal, offering a way to distinguish fermion soliton stars from other types of compact objects.
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