Cosmological gravitational wave background from primordial density perturbations

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dc.contributor.authorAnanda, Kishore N
dc.contributor.authorClarkson, Chris
dc.contributor.authorWands, David
dc.date.accessioned2021-10-08T07:11:31Z
dc.date.available2021-10-08T07:11:31Z
dc.date.issued2007
dc.description.abstractWe discuss the gravitational wave background generated by primordial density perturbations evolving during the radiation era. At second order in a perturbative expansion, density fluctuations produce gravitational waves. We calculate the power spectra of gravitational waves from this mechanism, and show that, in principle, future gravitational wave detectors could be used to constrain the primordial power spectrum on scales vastly different from those currently being probed by a large-scale structure. As examples we compute the gravitational wave background generated by both a power-law spectrum on all scales, and a delta-function power spectrum on a single scale
dc.identifier.apacitationAnanda, K. N., Clarkson, C., & Wands, D. (2007). Cosmological gravitational wave background from primordial density perturbations. <i>Physical Review D - Particles and Fields</i>, 75(12), 174 - 177. http://hdl.handle.net/11427/34629en_ZA
dc.identifier.chicagocitationAnanda, Kishore N, Chris Clarkson, and David Wands "Cosmological gravitational wave background from primordial density perturbations." <i>Physical Review D - Particles and Fields</i> 75, 12. (2007): 174 - 177. http://hdl.handle.net/11427/34629en_ZA
dc.identifier.citationAnanda, K.N., Clarkson, C. & Wands, D. 2007. Cosmological gravitational wave background from primordial density perturbations. <i>Physical Review D - Particles and Fields.</i> 75(12):174 - 177. http://hdl.handle.net/11427/34629en_ZA
dc.identifier.issn0556-2821
dc.identifier.issn1089-4918
dc.identifier.ris TY - Journal Article AU - Ananda, Kishore N AU - Clarkson, Chris AU - Wands, David AB - We discuss the gravitational wave background generated by primordial density perturbations evolving during the radiation era. At second order in a perturbative expansion, density fluctuations produce gravitational waves. We calculate the power spectra of gravitational waves from this mechanism, and show that, in principle, future gravitational wave detectors could be used to constrain the primordial power spectrum on scales vastly different from those currently being probed by a large-scale structure. As examples we compute the gravitational wave background generated by both a power-law spectrum on all scales, and a delta-function power spectrum on a single scale DA - 2007 DB - OpenUCT DP - University of Cape Town IS - 12 J1 - Physical Review D - Particles and Fields LK - https://open.uct.ac.za PY - 2007 SM - 0556-2821 SM - 1089-4918 T1 - Cosmological gravitational wave background from primordial density perturbations TI - Cosmological gravitational wave background from primordial density perturbations UR - http://hdl.handle.net/11427/34629 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34629
dc.identifier.vancouvercitationAnanda KN, Clarkson C, Wands D. Cosmological gravitational wave background from primordial density perturbations. Physical Review D - Particles and Fields. 2007;75(12):174 - 177. http://hdl.handle.net/11427/34629.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Mathematics and Applied Mathematics
dc.publisher.facultyFaculty of Science
dc.sourcePhysical Review D - Particles and Fields
dc.source.journalissue12
dc.source.journalvolume75
dc.source.pagination174 - 177
dc.source.urihttps://dx.doi.org/10.1103/PhysRevD.75.123518
dc.subject.otherphysics of elementary particles and fields
dc.subject.othercosmology
dc.subject.otherdelta function
dc.subject.otherenergy spectra
dc.subject.otherexpansion
dc.subject.otherfluctuations
dc.subject.othergravitational wave detectors
dc.subject.othergravitational waves
dc.subject.otherperturbation theory
dc.titleCosmological gravitational wave background from primordial density perturbations
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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