Exponential potential for an inflaton with nonminimal kinetic coupling and its supergravity embedding
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F14%3A00074484" target="_blank" >RIV/00216224:14310/14:00074484 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevD.90.083512" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.90.083512</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.90.083512" target="_blank" >10.1103/PhysRevD.90.083512</a>
Alternative languages
Result language
angličtina
Original language name
Exponential potential for an inflaton with nonminimal kinetic coupling and its supergravity embedding
Original language description
In the light of new observational results, we discuss the status of the exponential potentials driving inflation. We depart from the minimal scenario and study an inflaton kinetically coupled to the Einstein tensor. We find that in this case, the exponential potentials are well compatible with observations. Their predictions coincide with those of the chaotic-type quadratic potential for an inflaton minimally coupled to gravity. We show that there exists a simple mapping between the two models. Moreover, a novel aspect of our model is that it features a natural exit from the inflationary phase even in the absence of a minimum. We also turn to supergravity and motivate this sort of potential and the nonminimal kinetic coupling as possible effective dilaton theories.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GBP201%2F12%2FG028" target="_blank" >GBP201/12/G028: Eduard Čech Institute for algebra, geometry and mathematical physics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical review D
ISSN
1550-7998
e-ISSN
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Volume of the periodical
90
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
"083512"-"083522"
UT code for WoS article
000344030000002
EID of the result in the Scopus database
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