2 papers
hep-th2025
Testing the Heterotic String with the Axion-Photon Coupling
Mario Reig, Timo Weigand
The discovery of an axion-like particle above the QCD line would rule out Grand Unified Theories, including the perturbative heterotic string with the Standard Model embedded in a…
hep-th2024
The Dark Dimension and the Grand Unification of Forces
Jonathan J. Heckman, Cumrun Vafa, Timo Weigand +1
The dark dimension scenario, predicting one extra mesoscopic dimension in the micron range, has emerged by applying various Swampland principles to the dark energy. In this note we…