Rolling with modular symmetry: quintessence and de Sitter in heterotic orbifolds
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866908857835454464 |
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| author | Gordillo-Ruiz, Hansel Hernandez-Segura, Miguel Portillo-Castillo, Ignacio Ramos-Sanchez, Saul Zavala, Ivonne |
| author_facet | Gordillo-Ruiz, Hansel Hernandez-Segura, Miguel Portillo-Castillo, Ignacio Ramos-Sanchez, Saul Zavala, Ivonne |
| contents | Modular 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-inspired, two-moduli truncation, we uncover a rich vacuum structure featuring anti-de Sitter minima and unstable de Sitter saddle points. We identify large regions in moduli space supporting multifield hilltop quintessence consistent with observations. All solutions satisfy refined swampland de Sitter bounds. Our results illustrate how modular symmetry can guide the construction of controlled, string-motivated quintessence scenarios within consistent effective theories. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_22781 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Rolling with modular symmetry: quintessence and de Sitter in heterotic orbifolds Gordillo-Ruiz, Hansel Hernandez-Segura, Miguel Portillo-Castillo, Ignacio Ramos-Sanchez, Saul Zavala, Ivonne High Energy Physics - Theory Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology Modular 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-inspired, two-moduli truncation, we uncover a rich vacuum structure featuring anti-de Sitter minima and unstable de Sitter saddle points. We identify large regions in moduli space supporting multifield hilltop quintessence consistent with observations. All solutions satisfy refined swampland de Sitter bounds. Our results illustrate how modular symmetry can guide the construction of controlled, string-motivated quintessence scenarios within consistent effective theories. |
| title | Rolling with modular symmetry: quintessence and de Sitter in heterotic orbifolds |
| topic | High Energy Physics - Theory Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2509.22781 |