Disformally self-tuning gravity

A bstract We extend a previous self-tuning analysis of the most general scalar-tensor theory of gravity in four dimensions with second order field equations by considering a generalized coupling to the matter sector. Through allowing a disformal coupling to matter we are able to extend the Fab Four...

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Veröffentlicht in:	The journal of high energy physics 2016-03, Vol.2016 (3), p.1-31, Article 161
Hauptverfasser:	Emond, William T., Saffin, Paul M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Classical and Quantum Gravitation Construction Cosmological constant Coupling Elementary Particles Gravitation Mathematical analysis Mathematical models Physics Physics and Astronomy Quantum Field Theories Quantum Field Theory Quantum Physics Regular Article - Theoretical Physics Relativity Theory String Theory
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Zusammenfassung:	A bstract We extend a previous self-tuning analysis of the most general scalar-tensor theory of gravity in four dimensions with second order field equations by considering a generalized coupling to the matter sector. Through allowing a disformal coupling to matter we are able to extend the Fab Four model and construct a new class of theories that are able to tune away the cosmological constant on Friedmann-Lemaitre-Robertson-Walker backgrounds.
ISSN:	1029-8479 1029-8479
DOI:	10.1007/JHEP03(2016)161