A class of ghost-free theories in symmetric teleparallel geometry
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866910783418400768 |
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| author | Bello-Morales, Antonio G. Jiménez, Jose Beltrán Cano, Alejandro Jiménez Maroto, Antonio L. Koivisto, Tomi S. |
| author_facet | Bello-Morales, Antonio G. Jiménez, Jose Beltrán Cano, Alejandro Jiménez Maroto, Antonio L. Koivisto, Tomi S. |
| contents | Theories formulated in the arena of teleparallel geometries are generically plagued by ghost-like instabilities or other pathologies that are ultimately caused by the breaking of some symmetries. In this work, we construct a class of ghost-free theories based on a symmetry under Transverse Diffeomorphisms that is naturally realised in symmetric teleparallelism. We explicitly show their equivalence to a family of theories with an extra scalar field plus a global degree of freedom and how Horndeski theories and healthy couplings to matter fields can be readily accommodated. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_19355 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A class of ghost-free theories in symmetric teleparallel geometry Bello-Morales, Antonio G. Jiménez, Jose Beltrán Cano, Alejandro Jiménez Maroto, Antonio L. Koivisto, Tomi S. General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics Theories formulated in the arena of teleparallel geometries are generically plagued by ghost-like instabilities or other pathologies that are ultimately caused by the breaking of some symmetries. In this work, we construct a class of ghost-free theories based on a symmetry under Transverse Diffeomorphisms that is naturally realised in symmetric teleparallelism. We explicitly show their equivalence to a family of theories with an extra scalar field plus a global degree of freedom and how Horndeski theories and healthy couplings to matter fields can be readily accommodated. |
| title | A class of ghost-free theories in symmetric teleparallel geometry |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2406.19355 |