3 papers
hep-ph2025
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…
hep-ph2025
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…
hep-ph2024
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…