Disformally self-tuning gravity
arXiv:1511.02055 · doi:10.1007/JHEP03(2016)161
Abstract
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.
36 pages. Prepared for publication in JHEP. Additional section included detailing analysis of a specific example in the case of the most general disformal self-tuning coupling to the matter sector. Minor edits made to main body of text
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- Invertible disformal transformations with higher derivatives
- Disformally Coupled Quintessence
- Well-Tempered Cosmology
- Non-Gaussianity in multi-sound-speed disformally coupled inflation
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