Matches in SemOpenAlex for { <https://semopenalex.org/work/W4287992076> ?p ?o ?g. }
Showing items 1 to 68 of
68
with 100 items per page.
- W4287992076 abstract "An effective Lagrangian approach, partly inspired by Quantum Loop Cosmology (QLC), is presented and formulated in a non flat FLRW space-times, making use of modified gravitational models. The models considered are non generic, and their choice is dictated by the necessity to have at least second order differential equations of motion in a non flat FLRW space-time. This is accomplished by a class of Lagrangian which are not analytic in the curvature invariants, or making use of a mimetic gravitational scalar field. It is shown that, for some effective models, the associated generalized Friedmann equation, in general, may admit non singular metrics as solutions, while the de Sitter space-time is present only for a restricted class, which includes General Relativity and Lovelock gravity. The other models admit pseudo de Sitter solutions, namely FLRW metrics, such that for vanishing spatial curvature looks like flat de Sitter patch, but for non vanishing spatial curvature are regular bounce metrics or, when the spatial curvature is negative, Big-Bang singular metrics." @default.
- W4287992076 created "2022-07-26" @default.
- W4287992076 creator A5021786516 @default.
- W4287992076 creator A5055908573 @default.
- W4287992076 creator A5082747043 @default.
- W4287992076 creator A5087808447 @default.
- W4287992076 date "2019-12-18" @default.
- W4287992076 modified "2023-09-28" @default.
- W4287992076 title "Higher derivative and mimetic models on non flat FLRW space-times" @default.
- W4287992076 doi "https://doi.org/10.48550/arxiv.1912.09307" @default.
- W4287992076 hasPublicationYear "2019" @default.
- W4287992076 type Work @default.
- W4287992076 citedByCount "0" @default.
- W4287992076 crossrefType "posted-content" @default.
- W4287992076 hasAuthorship W4287992076A5021786516 @default.
- W4287992076 hasAuthorship W4287992076A5055908573 @default.
- W4287992076 hasAuthorship W4287992076A5082747043 @default.
- W4287992076 hasAuthorship W4287992076A5087808447 @default.
- W4287992076 hasBestOaLocation W42879920761 @default.
- W4287992076 hasConcept C121332964 @default.
- W4287992076 hasConcept C124017977 @default.
- W4287992076 hasConcept C130187892 @default.
- W4287992076 hasConcept C147452769 @default.
- W4287992076 hasConcept C172790937 @default.
- W4287992076 hasConcept C19262093 @default.
- W4287992076 hasConcept C195065555 @default.
- W4287992076 hasConcept C2524010 @default.
- W4287992076 hasConcept C26405456 @default.
- W4287992076 hasConcept C30864177 @default.
- W4287992076 hasConcept C33923547 @default.
- W4287992076 hasConcept C37914503 @default.
- W4287992076 hasConcept C62520636 @default.
- W4287992076 hasConcept C74650414 @default.
- W4287992076 hasConcept C84999194 @default.
- W4287992076 hasConcept C85405196 @default.
- W4287992076 hasConceptScore W4287992076C121332964 @default.
- W4287992076 hasConceptScore W4287992076C124017977 @default.
- W4287992076 hasConceptScore W4287992076C130187892 @default.
- W4287992076 hasConceptScore W4287992076C147452769 @default.
- W4287992076 hasConceptScore W4287992076C172790937 @default.
- W4287992076 hasConceptScore W4287992076C19262093 @default.
- W4287992076 hasConceptScore W4287992076C195065555 @default.
- W4287992076 hasConceptScore W4287992076C2524010 @default.
- W4287992076 hasConceptScore W4287992076C26405456 @default.
- W4287992076 hasConceptScore W4287992076C30864177 @default.
- W4287992076 hasConceptScore W4287992076C33923547 @default.
- W4287992076 hasConceptScore W4287992076C37914503 @default.
- W4287992076 hasConceptScore W4287992076C62520636 @default.
- W4287992076 hasConceptScore W4287992076C74650414 @default.
- W4287992076 hasConceptScore W4287992076C84999194 @default.
- W4287992076 hasConceptScore W4287992076C85405196 @default.
- W4287992076 hasLocation W42879920761 @default.
- W4287992076 hasLocation W42879920762 @default.
- W4287992076 hasOpenAccess W4287992076 @default.
- W4287992076 hasPrimaryLocation W42879920761 @default.
- W4287992076 hasRelatedWork W137473244 @default.
- W4287992076 hasRelatedWork W1982272403 @default.
- W4287992076 hasRelatedWork W2972054204 @default.
- W4287992076 hasRelatedWork W3098576151 @default.
- W4287992076 hasRelatedWork W3100826392 @default.
- W4287992076 hasRelatedWork W3118972204 @default.
- W4287992076 hasRelatedWork W4213373641 @default.
- W4287992076 hasRelatedWork W4288117016 @default.
- W4287992076 hasRelatedWork W2186947740 @default.
- W4287992076 hasRelatedWork W3141124300 @default.
- W4287992076 isParatext "false" @default.
- W4287992076 isRetracted "false" @default.
- W4287992076 workType "article" @default.