Abstract
Inflationary slow-roll dynamics in Einstein gravity with a nonminimal scalar-curvature coupling can be equivalent to that in the certain ∫(R) gravity theory. We review the correspondence and extend it to N=l supergravity. The nonminimal coupling in supergravity is rewritten in terms of the standard ('minimal') N=l matter-coupled supergravity by using curved superspace. The established equivalence between two different inflationary theories means the same inflaton scalar potential, and does not imply the same post-inflationary dynamics and reheating.
| Original language | English |
|---|---|
| Article number | 022 |
| Journal | Journal of Cosmology and Astroparticle Physics |
| Volume | 2012 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Aug 2012 |
| Externally published | Yes |
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Keywords
- Inflation
- Modified gravity
- Supersymmetry and cosmology
ASJC Scopus subject areas
- Astronomy and Astrophysics
Cite this
Inflation and nonminimal scalar-curvature coupling in gravity and supergravity. / Ketov, Sergei V.; Starobinsky, Alexei A.
In: Journal of Cosmology and Astroparticle Physics, Vol. 2012, No. 8, 022, 08.2012.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Inflation and nonminimal scalar-curvature coupling in gravity and supergravity
AU - Ketov, Sergei V.
AU - Starobinsky, Alexei A.
PY - 2012/8
Y1 - 2012/8
N2 - Inflationary slow-roll dynamics in Einstein gravity with a nonminimal scalar-curvature coupling can be equivalent to that in the certain ∫(R) gravity theory. We review the correspondence and extend it to N=l supergravity. The nonminimal coupling in supergravity is rewritten in terms of the standard ('minimal') N=l matter-coupled supergravity by using curved superspace. The established equivalence between two different inflationary theories means the same inflaton scalar potential, and does not imply the same post-inflationary dynamics and reheating.
AB - Inflationary slow-roll dynamics in Einstein gravity with a nonminimal scalar-curvature coupling can be equivalent to that in the certain ∫(R) gravity theory. We review the correspondence and extend it to N=l supergravity. The nonminimal coupling in supergravity is rewritten in terms of the standard ('minimal') N=l matter-coupled supergravity by using curved superspace. The established equivalence between two different inflationary theories means the same inflaton scalar potential, and does not imply the same post-inflationary dynamics and reheating.
KW - Inflation
KW - Modified gravity
KW - Supersymmetry and cosmology
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UR - http://www.scopus.com/inward/citedby.url?scp=84866292887&partnerID=8YFLogxK
U2 - 10.1088/1475-7516/2012/08/022
DO - 10.1088/1475-7516/2012/08/022
M3 - Article
VL - 2012
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
SN - 1475-7516
IS - 8
M1 - 022
ER -