Mimetic Massive Gravity: Beyond Linear Approximation
| Autor: | Ali H. Chamseddine, Viatcheslav Mukhanov |
|---|---|
| Přispěvatelé: | Institut des Hautes Etudes Scientifiques (IHES), IHES, Laboratoire de Physique Théorique de l'ENS (LPTENS), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut des Hautes Etudes Scientifiques ( IHES ), Laboratoire de Physique Théorique de l'ENS ( LPTENS ), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris ( FRDPENS ), Centre National de la Recherche Scientifique ( CNRS ) -École normale supérieure - Paris ( ENS Paris ) -Centre National de la Recherche Scientifique ( CNRS ) -École normale supérieure - Paris ( ENS Paris ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Centre National de la Recherche Scientifique ( CNRS ) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
High Energy Physics - Theory
correction: nonlinear [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph] graviton: mass 01 natural sciences General Relativity and Quantum Cosmology [ PHYS.HTHE ] Physics [physics]/High Energy Physics - Theory [hep-th] decoupling High Energy Physics::Theory Cosmological perturbation theory Mathematical physics media_common Physics [PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th] graviton: massive Effective Field Theories transverse [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc] mass: gravitation Astrophysics - Cosmology and Nongalactic Astrophysics Nuclear and High Energy Physics Cosmology and Nongalactic Astrophysics (astro-ph.CO) media_common.quotation_subject Dark matter Scalar (mathematics) Degrees of freedom (physics and chemistry) FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) Type (model theory) dark matter [ PHYS.GRQC ] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc] fluctuation: quantum 0103 physical sciences strong coupling lcsh:Nuclear and particle physics. Atomic energy. Radioactivity gravitation: massive 010306 general physics perturbation theory 010308 nuclear & particles physics Graviton scale: Planck ghost Universe field theory: scalar Automatic Keywords Massive gravity High Energy Physics - Theory (hep-th) lcsh:QC770-798 approximation: linear [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Classical Theories of Gravity |
| Zdroj: | JHEP JHEP, 2018, 06, pp.062. ⟨10.1007/JHEP06(2018)062⟩ Journal of High Energy Physics Journal of High Energy Physics, Springer, 2018, 06, pp.062. ⟨10.1007/JHEP06(2018)062⟩ Journal of High Energy Physics, Vol 2018, Iss 6, Pp 1-20 (2018) |
| ISSN: | 1126-6708 1029-8479 |
| Popis: | We present a theory of ghost-free massive gravity where the mass of the graviton is generated through the Brout-Englert-Higgs (BEH) mechanism and one of the four scalar fields used is that of mimetic gravity. The mass term is not of the Fierz-Pauli type and the constraint eliminates the Boulware-Deser ghost which is absent to all orders. We perform a detailed analysis using the methods of cosmological perturbation theory and consider quantum fluctuations of the degrees of freedom of massive graviton and mimetic matter. It is shown that for three of the degrees of freedom of the graviton of mass $m$ the nonlinear corrections become comparable to the linear terms already at a length scale of order $m^{-\frac{1}{2}}$. Thus, at smaller scales they become strongly coupled and the graviton remains with two transverse degrees of freedom which get strongly coupled only at Planck scale. The mimetic field behaves as cold particles of half of the graviton mass and could well explain the source of dark matter in our universe. In the weakly coupled domain mimetic matter is completely decoupled from the massive graviton. 25 pages |
| Databáze: | OpenAIRE |
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