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Cosmological tensor perturbations in theories beyond Lambda CDM

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dc.contributor.authorAbdelwahab, Mohamed
dc.contributor.authorCruz Dombriz, Álvaro de la
dc.contributor.authorDunsby, P.K.S.
dc.date.accessioned2023-06-19T15:00:46Z
dc.date.available2023-06-19T15:00:46Z
dc.date.issued2013
dc.description© 2013 American Institute of Physics. Conference on Multiverse and Fundamental Cosmology (Multicosmofun) (12. 2013. Szczecin, POLAND). AdlCD acknowledges financial support from URC and NRF (South Africa), MICINN (Spain) projects numbers FIS2011-23000, FPA2011-27853-C02-01 and Consolider-Ingenio MULTIDARK CSD2009-00064.
dc.description.abstractWe study for the first time a complete analysis of the imprint of tensor anisotropies on the Cosmic Microwave Background for a class of f(R) gravity theories within the CAMB-PPF framework. Herein we present the most relevant equations, both for the cosmological background and gravitational wave perturbations, taking care to include all effects which arise from f(R) modifications. We find that that the dominant contribution to deviations from General Relativity in the temperature and polarization spectra can be attributed to modifications in the background. This demonstrates the importance of using the correct background in perturbative studies of f(R) gravity.
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipNRF (South Africa)
dc.description.sponsorshipURC (South Africa)
dc.description.sponsorshipMinisterio de Ciencia e Innovación (MICINN)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/36315
dc.identifier.doi10.1063/1.4791747
dc.identifier.issn0094-243x
dc.identifier.officialurlhttp://dx.doi.org/10.1063/1.4791747
dc.identifier.relatedurlhttp://scitation.aip.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/35118
dc.journal.titleAIP conference proceedings : Multiverse and fundamental cosmology
dc.language.isoeng
dc.page.final160
dc.page.initial157
dc.publisherAmerican Institute of Physics
dc.relation.projectIDFIS2011-23000
dc.relation.projectIDFPA2011-27853-C02-01
dc.relation.projectIDCSD2009-00064
dc.rights.accessRightsopen access
dc.subject.cdu53
dc.subject.keywordMicrowave background anisotropies
dc.subject.keywordModified gravity
dc.subject.keywordGravitional-waves
dc.subject.keywordF(R) gravity
dc.subject.keywordUniverses
dc.subject.keywordModels.
dc.subject.ucmFísica (Física)
dc.subject.unesco22 Física
dc.titleCosmological tensor perturbations in theories beyond Lambda CDM
dc.typejournal article
dc.volume.number1514
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