6 papers
Neutrino-electron scattering kernels in isotropic media
Jens Chluba, Bryce Cyr, Michiru Uwabo-Niibo +1
In the early universe, neutrinos undergo many interactions with the particles in the plasma. Key processes are the scattering of neutrinos by free electrons and positrons. In this…
UV Luminosity Functions from HST and JWST: A Possible Resolution to the High-Redshift Galaxy Abundance Puzzle and Implications for Cosmic Strings
Mattéo Blamart, Adrian Liu, Robert Brandenberger +2
Recent observations of high redshift galaxies by the James Webb Space Telescope suggest the presence of a bright population of galaxies that is more abundant than predicted by most…
Spectral distortion anisotropies from photon to dark photon conversions
Sara Evangelista, Jens Chluba, Bryce Cyr
Dark photons are a gauge boson of a hypothetical dark sector, representing one of the most-studied minimal extensions of the Standard Model, with wide-ranging theoretical and obser…
CMB Spectral Distortions from Resonant Conversions in Atomic Dark Sectors
Duncan K. Adams, Jared Barron, Bryce Cyr +1
Dark sectors consisting of atomic constituents (electrons, protons, and photons) offer a well-motivated extension to the Standard Model while providing multiple avenues for phenome…
Not-quite-primordial black holes seeded by cosmic string loops
Bryce Cyr
Cosmic strings appear in many well-motivated extensions to the standard model of particle physics. If they exist, an abundant population of compact objects known as cosmic string l…
Near-Peak Spectrum of Gravitational Waves from Collapsing Domain Walls
Bryce Cyr, Steven Cotterill, Richard Battye
Cosmological domain walls appear in many well-motivated extensions to the standard model of particle physics. If produced, they quickly enter into a self-similar scaling regime, wh…