6 papers
Quark-Lepton Color-Flavor Unification
Antonio Delgado, Seth Koren
We present an model unifying quark color-flavor with lepton flavor as a flavorful alternative to conventional theories of unif…
Global Structure, Non-Invertible PQ Symmetry, and the DFSZ Domain Wall Problem
Gongjun Choi, Sungwoo Hong, Seth Koren
In recent years it has become increasingly clear that the previously overlooked ``global structure'' of symmetry groups can encode significant theoretical structure and, more impor…
Dark Matter, Baryon Number, and Cosmic-Ray Antinuclei
Caleb Gemmell, Dan Hooper, Seth Koren +1
Antideuterons and antihelium nuclei in the cosmic-ray spectrum have long been considered a smoking gun signature of dark matter annihilation, making the tentative observation of se…
Boiling After the Dust Settles: Constraining First-Order Phase Transitions During Dark Energy Domination
Seth Koren, Yuhsin Tsai, Runqing Wang
A first-order phase transition could occur in the late universe when vacuum energy begins dominating the energy density () and convert some latent heat into other f…
Phenomenology of Fractionally Charged Particles: Two Reps Are Better Than One
Seth Koren, Adam Martin
We continue our study of fractionally charged particles (FCPs) -- particles carrying electric charge a multiple of . Discovering an FCP would inform us about both Standard Mod…
Non-Invertible Peccei-Quinn Symmetry, Natural 2HDM Alignment, and the Visible Axion
Antonio Delgado, Seth Koren
We identify as a spurion of non-invertible Peccei-Quinn symmetry in the type II 2HDM with gauged quark flavor. Thus a UV theory which introduces quark color-flavor monop…