FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2744033563> ?p ?o ?g. }

• W2744033563 abstract "Theoretical arguments and cosmological observations suggest that Einstein's theory of general relativity needs to be modified at high energies. One of the best motivated higher-curvature extensions of general relativity is Einstein-scalar-Gauss-Bonnet gravity, in which a scalar field is coupled to quadratic curvature invariants. This theory is inspired by an effective string-theory model and its predictions dramatically differ from Einstein's theory in high-curvature regions - such as the interior of black holes and the early universe - where it aims at resolving curvature singularities. In this work we derive cosmological solutions in Einstein-scalar-Gauss-Bonnet gravity for quadratic and for exponential coupling functions, and for any spatial curvature. We discuss already known solutions and find new nonsingular, inflationary, and bouncing solutions. We study the linear stability of these solutions and the absence of ghosts, finding that all the aforementioned solutions are unstable against tensor perturbations. We then introduce a simple, quadratic potential for the scalar field. In some cases the presence of a mass term cures the tensor instability. The proposed model is therefore a viable and attractive candidate for inflation, and one in which the scalar field is naturally provided by the gravitational sector." @default.
• W2744033563 created "2017-08-17" @default.
• W2744033563 creator A5042880898 @default.
• W2744033563 date "2017-08-02" @default.
• W2744033563 modified "2023-09-27" @default.
• W2744033563 title "Early-universe cosmology in Einstein-scalar-Gauss-Bonnet gravity" @default.
• W2744033563 cites W1637056369 @default.
• W2744033563 cites W1759494267 @default.
• W2744033563 cites W1808943333 @default.
• W2744033563 cites W1969449998 @default.
• W2744033563 cites W1971230011 @default.
• W2744033563 cites W1975135987 @default.
• W2744033563 cites W1980851479 @default.
• W2744033563 cites W2004188331 @default.
• W2744033563 cites W2020489222 @default.
• W2744033563 cites W2029143135 @default.
• W2744033563 cites W2029403139 @default.
• W2744033563 cites W2040558894 @default.
• W2744033563 cites W2048679621 @default.
• W2744033563 cites W2050427346 @default.
• W2744033563 cites W2058755739 @default.
• W2744033563 cites W2083591292 @default.
• W2744033563 cites W2084412078 @default.
• W2744033563 cites W2107097129 @default.
• W2744033563 cites W2116923776 @default.
• W2744033563 cites W2123799162 @default.
• W2744033563 cites W2124225063 @default.
• W2744033563 cites W2131641826 @default.
• W2744033563 cites W2139274219 @default.
• W2744033563 cites W2147829712 @default.
• W2744033563 cites W2160024478 @default.
• W2744033563 cites W2163272395 @default.
• W2744033563 cites W2166436681 @default.
• W2744033563 cites W2181156952 @default.
• W2744033563 cites W2589390293 @default.
• W2744033563 cites W2986218762 @default.
• W2744033563 cites W3007754162 @default.
• W2744033563 cites W3039012497 @default.
• W2744033563 cites W3121720097 @default.
• W2744033563 hasPublicationYear "2017" @default.
• W2744033563 type Work @default.
• W2744033563 sameAs 2744033563 @default.
• W2744033563 citedByCount "2" @default.
• W2744033563 countsByYear W27440335632017 @default.
• W2744033563 countsByYear W27440335632020 @default.
• W2744033563 crossrefType "posted-content" @default.
• W2744033563 hasAuthorship W2744033563A5042880898 @default.
• W2744033563 hasConcept C110521144 @default.
• W2744033563 hasConcept C121332964 @default.
• W2744033563 hasConcept C124017977 @default.
• W2744033563 hasConcept C12520029 @default.
• W2744033563 hasConcept C146846114 @default.
• W2744033563 hasConcept C147452769 @default.
• W2744033563 hasConcept C165748483 @default.
• W2744033563 hasConcept C195065555 @default.
• W2744033563 hasConcept C21855786 @default.
• W2744033563 hasConcept C2524010 @default.
• W2744033563 hasConcept C26405456 @default.
• W2744033563 hasConcept C33332235 @default.
• W2744033563 hasConcept C33923547 @default.
• W2744033563 hasConcept C37914503 @default.
• W2744033563 hasConcept C44715290 @default.
• W2744033563 hasConcept C62520636 @default.
• W2744033563 hasConcept C74650414 @default.
• W2744033563 hasConceptScore W2744033563C110521144 @default.
• W2744033563 hasConceptScore W2744033563C121332964 @default.
• W2744033563 hasConceptScore W2744033563C124017977 @default.
• W2744033563 hasConceptScore W2744033563C12520029 @default.
• W2744033563 hasConceptScore W2744033563C146846114 @default.
• W2744033563 hasConceptScore W2744033563C147452769 @default.
• W2744033563 hasConceptScore W2744033563C165748483 @default.
• W2744033563 hasConceptScore W2744033563C195065555 @default.
• W2744033563 hasConceptScore W2744033563C21855786 @default.
• W2744033563 hasConceptScore W2744033563C2524010 @default.
• W2744033563 hasConceptScore W2744033563C26405456 @default.
• W2744033563 hasConceptScore W2744033563C33332235 @default.
• W2744033563 hasConceptScore W2744033563C33923547 @default.
• W2744033563 hasConceptScore W2744033563C37914503 @default.
• W2744033563 hasConceptScore W2744033563C44715290 @default.
• W2744033563 hasConceptScore W2744033563C62520636 @default.
• W2744033563 hasConceptScore W2744033563C74650414 @default.
• W2744033563 hasLocation W27440335631 @default.
• W2744033563 hasOpenAccess W2744033563 @default.
• W2744033563 hasPrimaryLocation W27440335631 @default.
• W2744033563 hasRelatedWork W1549345792 @default.
• W2744033563 hasRelatedWork W2066703912 @default.
• W2744033563 hasRelatedWork W2168575906 @default.
• W2744033563 hasRelatedWork W2226723513 @default.
• W2744033563 hasRelatedWork W2538722197 @default.
• W2744033563 hasRelatedWork W2587556570 @default.
• W2744033563 hasRelatedWork W2728239156 @default.
• W2744033563 hasRelatedWork W2784147001 @default.
• W2744033563 hasRelatedWork W2798272210 @default.
• W2744033563 hasRelatedWork W2886617229 @default.
• W2744033563 hasRelatedWork W2963802248 @default.
• W2744033563 hasRelatedWork W3098410788 @default.
• W2744033563 hasRelatedWork W3098633425 @default.
• W2744033563 hasRelatedWork W3101115173 @default.
• W2744033563 hasRelatedWork W3103085907 @default.
• W2744033563 hasRelatedWork W3105923743 @default.

• next