Super-renormalizable and finite gravitational theories

We hereby introduce and extensively study a class of non-polynomial higher derivative theories of gravity that realize a ultraviolet (UV) completion of Einstein general relativity. These theories are unitary (ghost free) and at most only one-loop divergences survive. The outcome is a class of theori...

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Main Authors: Leonardo Modesto, Lesław Rachwał
Format: Article
Language:English
Published: Elsevier 2014-12-01
Series:Nuclear Physics B
Online Access:http://www.sciencedirect.com/science/article/pii/S0550321314003137
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author Leonardo Modesto
Lesław Rachwał
author_facet Leonardo Modesto
Lesław Rachwał
author_sort Leonardo Modesto
collection DOAJ
description We hereby introduce and extensively study a class of non-polynomial higher derivative theories of gravity that realize a ultraviolet (UV) completion of Einstein general relativity. These theories are unitary (ghost free) and at most only one-loop divergences survive. The outcome is a class of theories super-renormalizable in even dimension and finite in odd dimension. Moreover, we explicitly prove in D=4 that there exists an extension of the theory that is completely finite and all the beta functions vanish even at one-loop. These results can be easily extended in extra dimensions and it is likely that the higher dimensional theory can be made finite, too. Therefore we have the possibility for “finite quantum gravity” in any dimension.
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spelling doaj.art-538008c77e1049f2b8c73d7fa128ef4c2022-12-22T02:06:35ZengElsevierNuclear Physics B0550-32131873-15622014-12-01889C22824810.1016/j.nuclphysb.2014.10.015Super-renormalizable and finite gravitational theoriesLeonardo ModestoLesław RachwałWe hereby introduce and extensively study a class of non-polynomial higher derivative theories of gravity that realize a ultraviolet (UV) completion of Einstein general relativity. These theories are unitary (ghost free) and at most only one-loop divergences survive. The outcome is a class of theories super-renormalizable in even dimension and finite in odd dimension. Moreover, we explicitly prove in D=4 that there exists an extension of the theory that is completely finite and all the beta functions vanish even at one-loop. These results can be easily extended in extra dimensions and it is likely that the higher dimensional theory can be made finite, too. Therefore we have the possibility for “finite quantum gravity” in any dimension.http://www.sciencedirect.com/science/article/pii/S0550321314003137
spellingShingle Leonardo Modesto
Lesław Rachwał
Super-renormalizable and finite gravitational theories
Nuclear Physics B
title Super-renormalizable and finite gravitational theories
title_full Super-renormalizable and finite gravitational theories
title_fullStr Super-renormalizable and finite gravitational theories
title_full_unstemmed Super-renormalizable and finite gravitational theories
title_short Super-renormalizable and finite gravitational theories
title_sort super renormalizable and finite gravitational theories
url http://www.sciencedirect.com/science/article/pii/S0550321314003137
work_keys_str_mv AT leonardomodesto superrenormalizableandfinitegravitationaltheories
AT lesławrachwał superrenormalizableandfinitegravitationaltheories