Matches in SemOpenAlex for { <https://semopenalex.org/work/W224255798> ?p ?o ?g. }
Showing items 1 to 82 of
82
with 100 items per page.
- W224255798 abstract "We analyze the large scale properties of the universe using the seven-year WMAP temperature data. We investigate the global topology of the universe, as well as semiclassical fluctuations of primordial perturbations on large scales. We study the possibility that the universe is flat, but with one or more space directions compactified. We constrain the size of the compact dimension to be L/L₀ = 1.27, 0.97, 0.57 at 95% confidence for the case of three, two and one compactified dimension, respectively, where L₀ = 14.4 Gpc is the distance to the last scattering surface. We find a statistically significant signal for a compact universe, and the best- fit spacetime is a universe with two compact directions of size L/L₀ = 1.9, with the non-compact direction pointing in a direction close to the velocity of the Local Group. We consider two possible semiclassical modifications of the primordial power spectrum. For the amplitude of a fluctuation in one Fourier mode we find the 95% bound of a₀ = 6.45 x 10⁻⁴. For a semiclassical gaussian fluctuation in space the 95% confidence region for the amplitude is - 5.16 x 10⁻² = a₀ = 5.07 x 10⁻². We show that the scenarios we consider are not responsible for the previously suggested possible special direction in space, the so- called axis of evil" @default.
- W224255798 created "2016-06-24" @default.
- W224255798 creator A5020403087 @default.
- W224255798 date "2012-01-01" @default.
- W224255798 modified "2023-10-17" @default.
- W224255798 title "Implications about the large scale properties of the universe from the cosmic microwave background" @default.
- W224255798 hasPublicationYear "2012" @default.
- W224255798 type Work @default.
- W224255798 sameAs 224255798 @default.
- W224255798 citedByCount "0" @default.
- W224255798 crossrefType "journal-article" @default.
- W224255798 hasAuthorship W224255798A5020403087 @default.
- W224255798 hasConcept C11346066 @default.
- W224255798 hasConcept C121332964 @default.
- W224255798 hasConcept C125860484 @default.
- W224255798 hasConcept C13560167 @default.
- W224255798 hasConcept C172790937 @default.
- W224255798 hasConcept C180205008 @default.
- W224255798 hasConcept C187640670 @default.
- W224255798 hasConcept C19262093 @default.
- W224255798 hasConcept C195407617 @default.
- W224255798 hasConcept C20154449 @default.
- W224255798 hasConcept C207297109 @default.
- W224255798 hasConcept C26405456 @default.
- W224255798 hasConcept C2779625871 @default.
- W224255798 hasConcept C33332235 @default.
- W224255798 hasConcept C44870925 @default.
- W224255798 hasConcept C535169671 @default.
- W224255798 hasConcept C62520636 @default.
- W224255798 hasConcept C62796785 @default.
- W224255798 hasConcept C84114770 @default.
- W224255798 hasConcept C84999194 @default.
- W224255798 hasConcept C85725439 @default.
- W224255798 hasConcept C87485669 @default.
- W224255798 hasConceptScore W224255798C11346066 @default.
- W224255798 hasConceptScore W224255798C121332964 @default.
- W224255798 hasConceptScore W224255798C125860484 @default.
- W224255798 hasConceptScore W224255798C13560167 @default.
- W224255798 hasConceptScore W224255798C172790937 @default.
- W224255798 hasConceptScore W224255798C180205008 @default.
- W224255798 hasConceptScore W224255798C187640670 @default.
- W224255798 hasConceptScore W224255798C19262093 @default.
- W224255798 hasConceptScore W224255798C195407617 @default.
- W224255798 hasConceptScore W224255798C20154449 @default.
- W224255798 hasConceptScore W224255798C207297109 @default.
- W224255798 hasConceptScore W224255798C26405456 @default.
- W224255798 hasConceptScore W224255798C2779625871 @default.
- W224255798 hasConceptScore W224255798C33332235 @default.
- W224255798 hasConceptScore W224255798C44870925 @default.
- W224255798 hasConceptScore W224255798C535169671 @default.
- W224255798 hasConceptScore W224255798C62520636 @default.
- W224255798 hasConceptScore W224255798C62796785 @default.
- W224255798 hasConceptScore W224255798C84114770 @default.
- W224255798 hasConceptScore W224255798C84999194 @default.
- W224255798 hasConceptScore W224255798C85725439 @default.
- W224255798 hasConceptScore W224255798C87485669 @default.
- W224255798 hasLocation W2242557981 @default.
- W224255798 hasOpenAccess W224255798 @default.
- W224255798 hasPrimaryLocation W2242557981 @default.
- W224255798 hasRelatedWork W1044448796 @default.
- W224255798 hasRelatedWork W1964241716 @default.
- W224255798 hasRelatedWork W1971631076 @default.
- W224255798 hasRelatedWork W2029283137 @default.
- W224255798 hasRelatedWork W2050766409 @default.
- W224255798 hasRelatedWork W2056996910 @default.
- W224255798 hasRelatedWork W2057007033 @default.
- W224255798 hasRelatedWork W2109198013 @default.
- W224255798 hasRelatedWork W2239424790 @default.
- W224255798 hasRelatedWork W2781338057 @default.
- W224255798 hasRelatedWork W3011814280 @default.
- W224255798 hasRelatedWork W3099186050 @default.
- W224255798 hasRelatedWork W3100539073 @default.
- W224255798 hasRelatedWork W3100554307 @default.
- W224255798 hasRelatedWork W3102567082 @default.
- W224255798 hasRelatedWork W3104045376 @default.
- W224255798 hasRelatedWork W3104706139 @default.
- W224255798 hasRelatedWork W3105823095 @default.
- W224255798 hasRelatedWork W3123149333 @default.
- W224255798 isParatext "false" @default.
- W224255798 isRetracted "false" @default.
- W224255798 magId "224255798" @default.
- W224255798 workType "article" @default.