11 papers
The Pull of Stasis: A Study of the Dynamics of the Thermal Stasis Attractor
Jonah Barber, Keith R. Dienes, Brooks Thomas
Cosmological stasis, a surprising phenomenon in which the abundances of different energy components in the universe with different equations of state remain constant despite cosmol…
Machine Learning Does It and Does It Better: Unearthing Primordial Dark-Matter Velocities from the Matter Power Spectrum
Keith R. Dienes, Jessica N. Howard, Fei Huang +2
One effective way of learning about the production and properties of dark matter in the early universe is by extracting information about the primordial dark-matter phase-space dis…
Primordial Black Holes Place the Universe in Stasis
Keith R. Dienes, Lucien Heurtier, Fei Huang +3
A variety of scenarios for early-universe cosmology give rise to a population of primordial black holes (PBHs) with a broad spectrum of masses. The evaporation of PBHs in such scen…
Primordial Black Holes and their Mass Spectra: The Effects of Mergers and Accretion within Stasis Cosmologies
Keith R. Dienes, Lucien Heurtier, Fei Huang +2
A variety of processes in the very early universe can give rise to a population of primordial black holes (PBHs) with an extended mass spectrum. For certain mass spectra of this so…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
MATHUSLA: An External Long-Lived Particle Detector to Maximize the Discovery Potential of the HL-LHC
Branden Aitken, Cristiano Alpigiani, Juan Carlos Arteaga-Velázquez +70
We present the current status of the MATHUSLA (MAssive Timing Hodoscope for Ultra-Stable neutraL pArticles) long-lived particle (LLP) detector at the HL-LHC, covering the design, f…