From the 1 of 8 linked papers with an AI index.
8 papers
High Precision Fundamental Physics Experiments at JLab with Spin-transparent Storage Rings of Low-energy Polarized Electron Beams
Vladimir Khachatryan, Riad Suleiman, Alberto Accardi +27
A breakthrough in fundamental physics experiments measuring particle spin precession may happen if spin-transparent storage rings become adopted tools for such experiments. We pres…
The Dark Dimension meets the Axiverse
Kevin Langhoff, Maria Ramos, Mario Reig
The paper studies how combining dark dimension models with an axiverse affects early‑universe cosmology, showing that freeze‑in production of Kaluza‑Klein axion and graviton towers…
Axion Quality Problem: Keep Calm and Baryon
Prateek Agrawal, Anson Hook, Vazha Loladze +1
Axion models generically suffer from a severe quality problem when coupled to gravity. In this article we provide a very simple model with a high quality axion. The axion is a pseu…
Testing F-theory GUTs with the Axiverse
Michael Nee, Mario Reig, Timo Weigand
We show that axions coupled to photons in F-theory Grand Unified Theories (GUTs) satisfy the coupling-to-mass relation $g_{aγ}/m_a \leq C\, \frac{α_{\rm em}}{2Ï}\frac{1}{m_Ïf_Ï…
Heterotic String Theory Suggests a QCD Axion Near 0.5 neV
Joshua N. Benabou, Giulio Alvise Dainelli, Mario Reig +1
We show that in heterotic string theory -- and dual corners of the landscape including Type I string theory -- the QCD axion mass is bounded from below by neV, a…
Axion couplings in Orbifold GUTs
Prateek Agrawal, Michael Nee, Mario Reig
We consider the coupling of axions to gauge bosons in higher-dimensional Grand Unified Theories (GUT) inspired by string theory constructions with D-branes on orbifold singularitie…