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  Inflation with Massive Spin-2 Ghosts

Kubo, J., Kuntz, J., Rezacek, J., & Saake, P. (2022). Inflation with Massive Spin-2 Ghosts. Journal of Cosmology and Astroparticle Physics, 2022(11): 049. doi:10.1088/1475-7516/2022/11/049.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000B-3182-A Version Permalink: https://hdl.handle.net/21.11116/0000-000D-F81B-E
Genre: Journal Article

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2207.14329.pdf (Preprint), 822KB
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https://iopscience.iop.org/article/10.1088/1475-7516/2022/11/049/pdf (Publisher version)
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 Creators:
Kubo, Jisuke1, Author           
Kuntz, Jeffrey1, Author           
Rezacek, Jonas1, Author           
Saake, Philipp1, Author           
Affiliations:
1Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, ou_904549              

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Free keywords: Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO,General Relativity and Quantum Cosmology, gr-qc,High Energy Physics - Phenomenology, hep-ph,High Energy Physics - Theory, hep-th
 Abstract: We consider a generic model of quadratic gravity coupled to a single scalar
and investigate the effects of gravitational degrees of freedom on inflationary
parameters. We find that quantum corrections arising from the massive spin-2
ghost generate significant contributions to the effective inflationary
potential and allow for a realization of the spontaneous breakdown of global
scale invariance without the need for additional scalar fields. We compute
inflationary parameters, compare the resulting predictions to well-known
inflationary models, and find that they fit well within the Planck
collaboration's constraints on inflation.

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 Dates: 2022-09-21
 Publication Status: Published online
 Pages: 10 pages, 1 figure
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1088/1475-7516/2022/11/049
arXiv: 2207.14329
 Degree: -

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Title: Journal of Cosmology and Astroparticle Physics
Source Genre: Journal
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Publ. Info: Bristol, England : Institute of Physics Pub.
Pages: - Volume / Issue: 2022 (11) Sequence Number: 049 Start / End Page: - Identifier: ISSN: 1475-7516
CoNE: https://pure.mpg.de/cone/journals/resource/111055183238000_1