8 papers
High-redshift physics from the acoustic scale
Zachary J. Weiner
We present a simplified and general description of the high-redshift information in acoustic scale measurements from the cosmic microwave background and large-scale structure. The…
Dark forces suppress structure growth
Marco Costa, Cyril Creque-Sarbinowski, Olivier Simon +1
No experimental test precludes the possibility that the dark matter experiences forces beyond general relativity -- in fact, a variety of cosmic microwave background observations s…
Searching for coupled, hyperlight scalars across cosmic history
Masha Baryakhtar, Olivier Simon, Zachary J. Weiner
Cosmological scalar fields coupled to the Standard Model drive temporal variations in the fundamental constants that grow with redshift, positioning the early Universe as a powerfu…
Experimental targets for dark photon dark matter
David Cyncynates, Zachary J. Weiner
Ultralight dark photon dark matter features distinctive cosmological and astrophysical signatures and is also supported by a burgeoning direct-detection program searching for its k…
Detectable and defect-free dark photon dark matter
David Cyncynates, Zachary J. Weiner
Ultralight dark photons are compelling dark matter candidates, but their allowed kinetic mixing with the Standard Model photon is severely constrained by requiring that the dark ph…
Abundance and properties of dark radiation from the cosmic microwave background
Murali M. Saravanan, Thejs Brinckmann, Marilena Loverde +1
We study the cosmological signatures of new light relics that are collisionless like standard neutrinos or are strongly interacting. We provide a simple and succinct rephrasing of…