Hamiltonian formulation of a gravity model from (A)dS Yang-Mills theory
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866915941685657600 |
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| author | Chirco, Goffredo Lamberti, Alfonso Vitale, Patrizia |
| author_facet | Chirco, Goffredo Lamberti, Alfonso Vitale, Patrizia |
| contents | We study the Hamiltonian formulation of a gravity model obtained from a Yang--Mills theory for a one-parameter family of (A)dS Lie algebras parametrized by $α$, when the family of algebras is contracted to the Poincaré algebra in the limit $α\to 0$. We derive the canonical structure and first-class constraints and analyze the resulting algebra in the contraction limit. In this limit, the constraints generate the residual Lorentz gauge invariance, and the components of the AdS potential transform as tetrads and Lorentz connection. Finally, we determine the number of physical degrees of freedom, showing that in the non-propagating torsion sector - selected by a Lorentz-covariant gauge condition preserved under dynamical evolution - the theory exhibits only two propagating degrees of freedom. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_15479 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Hamiltonian formulation of a gravity model from (A)dS Yang-Mills theory Chirco, Goffredo Lamberti, Alfonso Vitale, Patrizia General Relativity and Quantum Cosmology High Energy Physics - Theory We study the Hamiltonian formulation of a gravity model obtained from a Yang--Mills theory for a one-parameter family of (A)dS Lie algebras parametrized by $α$, when the family of algebras is contracted to the Poincaré algebra in the limit $α\to 0$. We derive the canonical structure and first-class constraints and analyze the resulting algebra in the contraction limit. In this limit, the constraints generate the residual Lorentz gauge invariance, and the components of the AdS potential transform as tetrads and Lorentz connection. Finally, we determine the number of physical degrees of freedom, showing that in the non-propagating torsion sector - selected by a Lorentz-covariant gauge condition preserved under dynamical evolution - the theory exhibits only two propagating degrees of freedom. |
| title | Hamiltonian formulation of a gravity model from (A)dS Yang-Mills theory |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2604.15479 |