187 citations · 709 across the 23 of their papers we have counts for
4 papers · 1 filter
Atomic Dark Matter, Interacting Dark Radiation, and the Hubble Tension
Manuel A. Buen-Abad, Zackaria Chacko, Ina Flood +3
We present a new class of interacting dark sector models that can address the Hubble tension. Interacting dark radiation (DR) has previously been put forward as a solution to the p…
Dynamical Axion Misalignment from the Witten Effect
Abhishek Banerjee, Manuel A. Buen-Abad
We propose a relaxation mechanism for the initial misalignment angle of the pre-inflationary QCD axion with a large decay constant. The proposal addresses the challenges posed to t…
Light in the Shadows: Primordial Black Holes Making Dark Matter Shine
Kaustubh Agashe, Manuel Buen-Abad, Jae Hyeok Chang +4
We consider the possibility of indirect detection of dark sector processes by investigating a novel form of interaction between ambient dark matter (DM) and primordial black holes…
A Closer Look in the Mirror: Reflections on the Matter/Dark Matter Coincidence
Arushi Bodas, Manuel A. Buen-Abad, Anson Hook +1
We argue that the striking similarity between the cosmic abundances of baryons and dark matter, despite their very different astrophysical behavior, strongly motivates the scenario…