| Domaine : |
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| Titre : |
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Inflation with a Weyl term, or ghosts at work |
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| Auteur(s) : |
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N. Deruelle1, M. Sasaki2, Y. Sendouda1, 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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In order to assess the role of ghosts in cosmology, we study the evolution of linear cosmological perturbations during inflation when a Weyl term is added to the action. Our main results are that vector perturbations can no longer be ignored and that scalar modes diverge in the newtonian gauge but remain bounded in the comoving slicing. |
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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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23/12/2010 |
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| Journal : |
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| Journal of Cosmology and Astroparticle Physics |
| Publisher |
Institute of Physics (IOP) |
| ISSN |
1475-7508 (eISSN : 1475-7516) |
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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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03/2011 |
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| Volume : |
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03 |
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| Page, identifiant, ... : |
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040 |
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| Commentaire : |
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14 pages, 4 figures |
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