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| Titre : |
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Various Hamiltonian formulations of f(R) gravity and their canonical relationships |
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| Auteur(s) : |
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N. Deruelle1, Y. Sendouda2, A. Youssef1 |
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| Laboratoire : |
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| équipe(s) de recherche : |
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APC - THEORIE |
| Résumé : |
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Various Hamiltonian formulations of f(R) gravity can be found in the literature. Some authors follow the Ostrogradsky treatment of higher derivative theories and introduce as extra variables first order time derivatives of the metric (typically the extrinsic curvature). Some others take advantage of the conformal equivalence of f(R) theory with Einstein's gravity coupled to a scalar field and introduce as an extra variable the scalar curvature R itself, which includes second time derivatives of the metric. We show that, contrarily to some claims, these formulations are related by canonical transformations. |
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Langue du texte
intégral : |
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Anglais |
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Date de production,
écriture : |
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26/06/2009 |
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| Journal : |
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| Physical Review D (Phys. Rev. D) |
| Publisher |
American Physical Society |
| ISSN |
1550-7998 (eISSN : 1550-2368) |
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| Audience : |
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internationale |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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| Date de publication : |
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10/2009 |
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| Volume : |
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80 |
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| Page, identifiant, ... : |
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084032 |
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| Mots Clés : |
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Modified theories of gravity – Canonical formalism – Lagrangians – and variational principles – Lagrangian and Hamiltonian approach |
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| Commentaire : |
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15 pages, REVTeX 4 |
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