Matches in SemOpenAlex for { <https://semopenalex.org/work/W4294583796> ?p ?o ?g. }
Showing items 1 to 78 of
78
with 100 items per page.
- W4294583796 abstract "We analyze the energy density fluctuations contributed by scalar fields $Phi$ with vanishing expectation values, $langlePhirangle=0$, which are present in addition to the inflaton field. For simplicity we take $Phi$ to be non--interacting and minimally coupled to gravity. We use normal ordering to define the renormalized energy density operator $rho$, and we show that any normal ordering gives the same result for correlation functions of $rho$. We first consider massless fields and derive the energy fluctuations in a single mode $vk$, the two--point correlation function of the energy density, the power spectrum, and the variance of the smeared energy density, $ddR$. Mass effects are investigated for energy fluctuations in single modes. All quantities considered are scale invariant at the second horizon crossing (Harrison--Zel'dovich type) for massless and for unstable massive fields. The magnitude of the relative fluctuations $derho/rt$ is of order $(Hi/Mp)^2$ in the massless case, where $Hi$ is the Hubble constant during inflation. For an unstable field of mass $m_PhillHi$ with a decay rate $Gamma_Phi$ the magnitude is enhanced by a factor $sqrt{m_Phi/Gamma_Phi}$. Finally, the prediction for the cosmic variance of the average energy density in a sample is given in the massless case." @default.
- W4294583796 created "2022-09-05" @default.
- W4294583796 creator A5030752855 @default.
- W4294583796 creator A5084062450 @default.
- W4294583796 date "1994-12-07" @default.
- W4294583796 modified "2023-10-16" @default.
- W4294583796 title "Energy Density Fluctuations in Inflationary Cosmology" @default.
- W4294583796 doi "https://doi.org/10.48550/arxiv.gr-qc/9412021" @default.
- W4294583796 hasPublicationYear "1994" @default.
- W4294583796 type Work @default.
- W4294583796 citedByCount "0" @default.
- W4294583796 crossrefType "posted-content" @default.
- W4294583796 hasAuthorship W4294583796A5030752855 @default.
- W4294583796 hasAuthorship W4294583796A5084062450 @default.
- W4294583796 hasBestOaLocation W42945837961 @default.
- W4294583796 hasConcept C103874350 @default.
- W4294583796 hasConcept C105795698 @default.
- W4294583796 hasConcept C110521144 @default.
- W4294583796 hasConcept C121332964 @default.
- W4294583796 hasConcept C133386390 @default.
- W4294583796 hasConcept C141886431 @default.
- W4294583796 hasConcept C164008634 @default.
- W4294583796 hasConcept C168110828 @default.
- W4294583796 hasConcept C172790937 @default.
- W4294583796 hasConcept C173153575 @default.
- W4294583796 hasConcept C200941418 @default.
- W4294583796 hasConcept C207297109 @default.
- W4294583796 hasConcept C2524010 @default.
- W4294583796 hasConcept C26405456 @default.
- W4294583796 hasConcept C3079626 @default.
- W4294583796 hasConcept C33923547 @default.
- W4294583796 hasConcept C37914503 @default.
- W4294583796 hasConcept C53622274 @default.
- W4294583796 hasConcept C54937798 @default.
- W4294583796 hasConcept C57691317 @default.
- W4294583796 hasConcept C62520636 @default.
- W4294583796 hasConcept C84114770 @default.
- W4294583796 hasConcept C85725439 @default.
- W4294583796 hasConceptScore W4294583796C103874350 @default.
- W4294583796 hasConceptScore W4294583796C105795698 @default.
- W4294583796 hasConceptScore W4294583796C110521144 @default.
- W4294583796 hasConceptScore W4294583796C121332964 @default.
- W4294583796 hasConceptScore W4294583796C133386390 @default.
- W4294583796 hasConceptScore W4294583796C141886431 @default.
- W4294583796 hasConceptScore W4294583796C164008634 @default.
- W4294583796 hasConceptScore W4294583796C168110828 @default.
- W4294583796 hasConceptScore W4294583796C172790937 @default.
- W4294583796 hasConceptScore W4294583796C173153575 @default.
- W4294583796 hasConceptScore W4294583796C200941418 @default.
- W4294583796 hasConceptScore W4294583796C207297109 @default.
- W4294583796 hasConceptScore W4294583796C2524010 @default.
- W4294583796 hasConceptScore W4294583796C26405456 @default.
- W4294583796 hasConceptScore W4294583796C3079626 @default.
- W4294583796 hasConceptScore W4294583796C33923547 @default.
- W4294583796 hasConceptScore W4294583796C37914503 @default.
- W4294583796 hasConceptScore W4294583796C53622274 @default.
- W4294583796 hasConceptScore W4294583796C54937798 @default.
- W4294583796 hasConceptScore W4294583796C57691317 @default.
- W4294583796 hasConceptScore W4294583796C62520636 @default.
- W4294583796 hasConceptScore W4294583796C84114770 @default.
- W4294583796 hasConceptScore W4294583796C85725439 @default.
- W4294583796 hasLocation W42945837961 @default.
- W4294583796 hasLocation W42945837962 @default.
- W4294583796 hasOpenAccess W4294583796 @default.
- W4294583796 hasPrimaryLocation W42945837961 @default.
- W4294583796 hasRelatedWork W1550700991 @default.
- W4294583796 hasRelatedWork W1821593866 @default.
- W4294583796 hasRelatedWork W1967750609 @default.
- W4294583796 hasRelatedWork W1972512931 @default.
- W4294583796 hasRelatedWork W2071198520 @default.
- W4294583796 hasRelatedWork W2116531244 @default.
- W4294583796 hasRelatedWork W2159035958 @default.
- W4294583796 hasRelatedWork W3008958801 @default.
- W4294583796 hasRelatedWork W3099937178 @default.
- W4294583796 hasRelatedWork W3106016913 @default.
- W4294583796 isParatext "false" @default.
- W4294583796 isRetracted "false" @default.
- W4294583796 workType "article" @default.