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- Copeland, Edmund J.Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England.;Univ Nottingham, Nottingham Ctr Grav, Nottingham NG7 2RD, England. (author)
Generalised scalar-tensor theories and self-tuning
- Article/chapterEnglish2022
Publisher, publication year, extent ...
- 2022-03-01
- IOP Publishing,2022
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:kth-310598
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-310598URI
- https://doi.org/10.1088/1475-7516/2022/03/004DOI
- https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-203487URI
Supplementary language notes
- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- QC 20220405
- We explore a family of generalised scalar-tensor theories that exhibit self-tuning to low scale anti de Sitter vacua, even in the presence of a large cosmological constant. We are able to examine the linearised fluctuations about these vacua and compute the corresponding amplitude. Thanks to a subtle interplay between a weak scalar coupling and a low scalar mass, it is possible to exhibit self-tuning and compatibility with solar system tests of gravity without resorting to non-linearities and unreliable screening mechanisms. The weakness of the scalar coupling and the correspondingly slow response to vacuum energy phase transitions may present some interesting possibilities for connecting early universe inflation to the cancellation of vacuum energy.
Subject headings and genre
- NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
- NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
- NATURVETENSKAP Fysik Subatomär fysik hsv//swe
- NATURAL SCIENCES Physical Sciences Subatomic Physics hsv//eng
- M
- Cheung et al
- modified gravity
- dark energy theory
Added entries (persons, corporate bodies, meetings, titles ...)
- Ghataore, SukhrajUniv Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England.;Univ Nottingham, Nottingham Ctr Grav, Nottingham NG7 2RD, England. (author)
- Niedermann, FlorianStockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Nordita SU .;Stockholm Univ, Hannes Alfvens Vag 12, SE-10691 Stockholm, Sweden.(Swepub:su)flni8051 (author)
- Padilla, AntonioUniv Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England.;Univ Nottingham, Nottingham Ctr Grav, Nottingham NG7 2RD, England. (author)
- Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England.;Univ Nottingham, Nottingham Ctr Grav, Nottingham NG7 2RD, England.Nordiska institutet för teoretisk fysik (Nordita) (creator_code:org_t)
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- In:Journal of Cosmology and Astroparticle Physics: IOP Publishing:31475-7516
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