Theoretical Aspects of Massive Gravity
TLDR
Recently, the possibility of a massive graviton has seen a resurgence of interest due to recent progress which has overcome its traditional problems, yielding an avenue for addressing important open questions such as the cosmological constant naturalness problem as mentioned in this paper.Abstract:
Massive gravity has seen a resurgence of interest due to recent progress which has overcome its traditional problems, yielding an avenue for addressing important open questions such as the cosmological constant naturalness problem. The possibility of a massive graviton has been studied on and off for the past 70 years. During this time, curiosities such as the van Dam, Veltman, and Zakharov (vDVZ) discontinuity and the Boulware-Deser ghost were uncovered. These results are rederived in a pedagogical manner and the St\"uckelberg formalism to discuss them from the modern effective field theory viewpoint is developed. Recent progress of the last decade is reviewed, including the dissolution of the vDVZ discontinuity via the Vainshtein screening mechanism, the existence of a consistent effective field theory with a stable hierarchy between the graviton mass and the cutoff, and the existence of particular interactions which raise the maximal effective field theory cutoff and remove the ghosts. In addition, some peculiarities of massive gravitons on curved space, novel theories in three dimensions, and examples of the emergence of a massive graviton from extra dimensions and brane worlds are reviewed.read more
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The Confrontation Between General Relativity and Experiment
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Modified gravity theories on a nutshell: Inflation, bounce and late-time evolution
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Testing general relativity with present and future astrophysical observations
Emanuele Berti,Emanuele Berti,Enrico Barausse,Vitor Cardoso,Vitor Cardoso,Leonardo Gualtieri,Paolo Pani,Paolo Pani,Ulrich Sperhake,Ulrich Sperhake,Ulrich Sperhake,Leo C. Stein,Leo C. Stein,Norbert Wex,Kent Yagi,Kent Yagi,Tessa Baker,C.P. Burgess,C.P. Burgess,Flávio S. Coelho,Daniela D. Doneva,Antonio De Felice,Pedro G. Ferreira,Paulo C. C. Freire,James Healy,Carlos A. R. Herdeiro,Michael Horbatsch,Burkhard Kleihaus,Antoine Klein,Kostas D. Kokkotas,Jutta Kunz,Pablo Laguna,Ryan N. Lang,Ryan N. Lang,Ryan N. Lang,Tjonnie G. F. Li,Tjonnie G. F. Li,Tyson Littenberg,Andrew Matas,S. Mirshekari,Hirotada Okawa,Eugen Radu,Richard O'Shaughnessy,Richard O'Shaughnessy,Bangalore Suryanarayana Sathyaprakash,Chris Van Den Broeck,Hans A. Winther,Helvi Witek,Mir Emad Aghili,Justin Alsing,Brett Bolen,Luca Bombelli,Sarah Caudill,Liang Chen,Juan Carlos Degollado,Ryuichi Fujita,Caixia Gao,Davide Gerosa,Saeed Kamali,Hector O. Silva,João G. Rosa,Laleh Sadeghian,Marco O. P. Sampaio,Hajime Sotani,Miguel Zilhão +64 more
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Massive Gravity
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Journal ArticleDOI
Beyond the cosmological standard model
TL;DR: A review of the state of the art in the field of modified gravity can be found in this article, where the authors identify the guiding principles for rigorous and consistent modifications of the standard model, and discuss the prospects for empirical tests.
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