9 papers
Axiverse Lampposts
Masha Baryakhtar, David Cyncynates, Ella Henry
The string axiverse predicts a unique connection between the high scales approachable only through theory and the low energies within reach of experimental verification: a multitud…
ESO White Paper on Intensity Interferometry: Cosmology, Fundamental Physics, Quantum Optics
Robin Kaiser, William Guerin, Farrokh Vakili +21
In this whitepaper, we outline how recent technological advances and ongoing developments open qualitatively new science opportunities in cosmology, fundamental physics, and quantu…
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…
Dark Matter Haloscope with a Disordered Dielectric Absorber
Stewart Koppell, Otavio D. A. R. Bittencourt, Dip Joti Paul +3
Light dark matter candidates such as axions and dark photons generically couple to electromagnetism, yielding dark-matter-to-photon conversion as a key search strategy. In addition…
Search for continuous gravitational wave signals from luminous dark photon superradiance clouds with LVK O3 observations
Lorenzo Mirasola, Cristina Mondino, Francesco Amicucci +10
Superradiance clouds of kinetically-mixed dark photons around spinning black holes can produce observable multi-messenger electromagnetic and gravitational wave signals. The cloud…
Pi in the Sky: Neutron Stars with Exceptionally Light QCD Axions
Mia Kumamoto, Junwu Huang, Christian Drischler +2
We present a comprehensive study of axion condensed neutron stars that arise in models of an exceptionally light axion that couples to quantum chromodynamics (QCD). These axions so…