Matches in SemOpenAlex for { <https://semopenalex.org/work/W2014782274> ?p ?o ?g. }
- W2014782274 abstract "We investigate density perturbations sourced by a curvaton with a generic energy potential. The key feature of a curvaton potential which deviates from a quadratic is that the curvaton experiences a nonuniform onset of its oscillation. This sources additional contributions to the resulting density perturbations, and we especially find that the non-Gaussianity parameter ${f}_{mathrm{NL}}$ can become large with either sign no matter whether the curvaton dominates or subdominates the universe when it decays. Such nonquadratic curvaton potentials are required in order to produce a red-tilted density perturbation spectrum (without invoking large-field inflation), and are also motivated by explicit curvaton models based on microscopic physics. We further apply our generic results to the case where the curvaton is a pseudo-Nambu-Goldstone boson of a broken U(1) symmetry, and show that the resulting density perturbations are strongly enhanced towards the hilltop region of the energy potential, accompanied by a mild increase of the non-Gaussianity. Such hilltop Nambu-Goldstone curvatons can produce observationally suggested density perturbations under wide ranges of inflation/reheating scales, and further predict the non-Gaussianity of the density perturbations to lie within the range $10ensuremath{lesssim}{f}_{mathrm{NL}}ensuremath{lesssim}30$." @default.
- W2014782274 created "2016-06-24" @default.
- W2014782274 creator A5011900374 @default.
- W2014782274 creator A5049091735 @default.
- W2014782274 creator A5079117689 @default.
- W2014782274 date "2011-12-08" @default.
- W2014782274 modified "2023-10-03" @default.
- W2014782274 title "Non-Gaussianity from curvatons revisited" @default.
- W2014782274 cites W1626701312 @default.
- W2014782274 cites W1966490192 @default.
- W2014782274 cites W1970073840 @default.
- W2014782274 cites W1971230011 @default.
- W2014782274 cites W1973191548 @default.
- W2014782274 cites W1979147028 @default.
- W2014782274 cites W1982899663 @default.
- W2014782274 cites W1982945693 @default.
- W2014782274 cites W1985674297 @default.
- W2014782274 cites W1990217618 @default.
- W2014782274 cites W1990800008 @default.
- W2014782274 cites W1997667284 @default.
- W2014782274 cites W1997985887 @default.
- W2014782274 cites W2001321888 @default.
- W2014782274 cites W2003247268 @default.
- W2014782274 cites W2006830043 @default.
- W2014782274 cites W2011269234 @default.
- W2014782274 cites W2014716911 @default.
- W2014782274 cites W2019850169 @default.
- W2014782274 cites W2020717147 @default.
- W2014782274 cites W2031603352 @default.
- W2014782274 cites W2037188263 @default.
- W2014782274 cites W2045484874 @default.
- W2014782274 cites W2049817464 @default.
- W2014782274 cites W2052865260 @default.
- W2014782274 cites W2063829172 @default.
- W2014782274 cites W2074458016 @default.
- W2014782274 cites W2075627352 @default.
- W2014782274 cites W2079614197 @default.
- W2014782274 cites W2083318334 @default.
- W2014782274 cites W2083990625 @default.
- W2014782274 cites W2085504304 @default.
- W2014782274 cites W2086160589 @default.
- W2014782274 cites W2086217832 @default.
- W2014782274 cites W2097763257 @default.
- W2014782274 cites W2112356641 @default.
- W2014782274 cites W2118084428 @default.
- W2014782274 cites W2120760706 @default.
- W2014782274 cites W2123070630 @default.
- W2014782274 cites W2127161203 @default.
- W2014782274 cites W2134251287 @default.
- W2014782274 cites W2134943509 @default.
- W2014782274 cites W2137047745 @default.
- W2014782274 cites W2145074632 @default.
- W2014782274 cites W2151199878 @default.
- W2014782274 cites W2912731530 @default.
- W2014782274 cites W3037557646 @default.
- W2014782274 cites W3098367796 @default.
- W2014782274 cites W3098998701 @default.
- W2014782274 cites W3099703882 @default.
- W2014782274 cites W3100763021 @default.
- W2014782274 cites W3101176483 @default.
- W2014782274 cites W3101465600 @default.
- W2014782274 cites W3101916023 @default.
- W2014782274 cites W3102336512 @default.
- W2014782274 cites W3102669934 @default.
- W2014782274 cites W3104000720 @default.
- W2014782274 cites W3104649106 @default.
- W2014782274 cites W3105295805 @default.
- W2014782274 doi "https://doi.org/10.1103/physrevd.84.123506" @default.
- W2014782274 hasPublicationYear "2011" @default.
- W2014782274 type Work @default.
- W2014782274 sameAs 2014782274 @default.
- W2014782274 citedByCount "70" @default.
- W2014782274 countsByYear W20147822742012 @default.
- W2014782274 countsByYear W20147822742013 @default.
- W2014782274 countsByYear W20147822742014 @default.
- W2014782274 countsByYear W20147822742015 @default.
- W2014782274 countsByYear W20147822742016 @default.
- W2014782274 countsByYear W20147822742017 @default.
- W2014782274 countsByYear W20147822742018 @default.
- W2014782274 countsByYear W20147822742019 @default.
- W2014782274 countsByYear W20147822742020 @default.
- W2014782274 countsByYear W20147822742021 @default.
- W2014782274 countsByYear W20147822742022 @default.
- W2014782274 countsByYear W20147822742023 @default.
- W2014782274 crossrefType "journal-article" @default.
- W2014782274 hasAuthorship W2014782274A5011900374 @default.
- W2014782274 hasAuthorship W2014782274A5049091735 @default.
- W2014782274 hasAuthorship W2014782274A5079117689 @default.
- W2014782274 hasBestOaLocation W20147822742 @default.
- W2014782274 hasConcept C105795698 @default.
- W2014782274 hasConcept C109214941 @default.
- W2014782274 hasConcept C121332964 @default.
- W2014782274 hasConcept C121864883 @default.
- W2014782274 hasConcept C151389596 @default.
- W2014782274 hasConcept C152321242 @default.
- W2014782274 hasConcept C168110828 @default.
- W2014782274 hasConcept C177918212 @default.
- W2014782274 hasConcept C200941418 @default.
- W2014782274 hasConcept C207297109 @default.
- W2014782274 hasConcept C2778439541 @default.