Gravitational Waves From Dark Sectors, Oscillating Inflatons, and Mass Boosted Dark Matter

Understand

Gravitational waves signatures from dynamical scalar field configurations provide a compelling observational window on the early universe.

• Here we identify intriguing connections between dark matter and scalars fields that emit gravitational waves, either through a first order phase transition or oscillating after inflation.
• To study gravitational waves from first order phase transitions, we investigate a simplified model consisting of a heavy scalar coupled to a vector and fermion field.
• We then compute gravitational wave spectra sourced by inflaton field configurations oscillating after E-Model and T-Model inflation.