Easson, Damien;
Manton, Tucker;
Parikh, Maulik;
Svesko, Andrew;
(2021)
The stringy origins of Galileons and their novel limit.
Journal of Cosmology and Astroparticle Physics
, 2021
(5)
, Article 031. 10.1088/1475-7516/2021/05/031.
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Abstract
We show generalized Galileons — a particular subclass of Horndeski gravity — arise from a consistent Kaluza-Klein reduction of the low-energy effective action of heterotic string theory to first order in α'. This suggests Horndeski theories of gravity have a string-theoretic origin. The form of the Galileonic terms is precisely fixed by parameters of the embedding spacetime, so that only a specific subset of Horndeski theories is permitted by string theory. A novel limit of the model is considered by performing a dimensionfulrescaling of α'.
| Type: | Article |
|---|---|
| Title: | The stringy origins of Galileons and their novel limit |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1475-7516/2021/05/031 |
| Publisher version: | https://doi.org/10.1088/1475-7516/2021/05/031 |
| Language: | English |
| Additional information: | Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| Keywords: | Modified gravity, string theory and cosmology |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10143096 |
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