Rolling with modular symmetry: quintessence and de Sitter in heterotic orbifoldsHansel Gordillo-Ruiz, Miguel Hernandez-Segura, Ignacio Portillo-Castillo, Saul Ramos-Sanchez, Ivonne Zavalahttps://arxiv.org/abs/2509.22781
Rolling with modular symmetry: quintessence and de Sitter in heterotic orbifoldsModular invariance is a fundamental symmetry in string compactifications, constraining both the structure of the effective theory and the dynamics of moduli and matter fields. It has also gained renewed importance in the context of swampland conjectures and, independently, flavour physics. We investigate a modular-invariant scalar potential arising from heterotic orbifolds, where the flavour structure and moduli dynamics are jointly shaped by the underlying geometry. Focusing on a string-inspir…