The Phenomenology of Quadratically Coupled Ultra Light Dark Matter

Understand

We discuss models of ultralight scalar Dark Matter (DM) with linear and quadratic couplings to the Standard Model (SM).

• In addition to studying the phenomenology of linear and quadratic interactions separately, we examine their interplay.
• We review the different experiments that can probe such interactions and present the current and expected future bounds on the parameter space.
• In particular, we discuss the scalar field solution presented in [A.