Publication:
Gravitational collapse in f(R) theories

dc.contributor.authorRuiz Cembranos, José Alberto
dc.contributor.authorCruz Dombriz, Álvaro de la
dc.contributor.authorMontes Núñez, Bárbara
dc.date.accessioned2023-06-20T04:06:06Z
dc.date.available2023-06-20T04:06:06Z
dc.date.issued2012-04
dc.description© 2012 IOP Publishing Ltd and Sissa Medialab srl. This work has been supported by MICINN (Spain) project number FPA 2008-00592 and Consolider-Ingenio MULTIDARK CSD2009-00064. AdlCD also acknowledges financial support from NRF and URC research fellowships (South Africa) and kind hospitality of UCM, Madrid while elaborating part of the manuscript.
dc.description.abstractWe study the gravitational collapse in modified gravitational theories. In particular, we analyze a general f(R) model with uniformly collapsing cloud of self-gravitating dust particles. This analysis shares analogies with the formation of large-scale structures in the early Universe and with the formation of stars in a molecular cloud experiencing gravitational collapse. In the same way, this investigation can be used as a first approximation to the modification that stellar objects can suffer in these modified theories of gravity. We study concrete examples, and find that the analysis of gravitational collapse is an important tool to constrain models that present late-time cosmological acceleration.
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Ciencia e Innovación (MICINN), España
dc.description.sponsorshipPrograma Consolider-Ingenio-MULTIDARK
dc.description.sponsorshipNational Research Foundation (NRF), Sudáfrica
dc.description.sponsorshipURC, Sudáfrica
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/35811
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dc.identifier.doi10.1088/1475-7516/2012/04/021
dc.identifier.issn1475-7516
dc.identifier.officialurlhttp://dx.doi.org/10.1088/1475-7516/2012/04/021
dc.identifier.relatedurlhttp://arxiv.org/abs/1201.1289
dc.identifier.relatedurlhttp://iopscience.iop.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/44913
dc.journal.titleJournal of cosmology and astroparticle physics
dc.language.isoeng
dc.publisherIop Publishing
dc.relation.projectIDFPA 2008-00592
dc.relation.projectIDCSD2009-00064
dc.relation.projectIDNRF (South Africa)
dc.relation.projectIDURC (South Africa)
dc.rights.accessRightsopen access
dc.subject.cdu53
dc.subject.keywordGreater-than 1
dc.subject.keywordCosmological constant
dc.subject.keywordModified gravity
dc.subject.keywordDark energy
dc.subject.keywordGalaxy cluster
dc.subject.keywordUniverse
dc.subject.keywordMatter
dc.subject.keywordBrane
dc.subject.keywordSingularity
dc.subject.keywordTelescope
dc.subject.ucmFísica (Física)
dc.subject.unesco22 Física
dc.titleGravitational collapse in f(R) theories
dc.typejournal article
dspace.entity.typePublication
relation.isAuthorOfPublicationc5a4cc87-ceba-494d-95ab-d54b9b1a35e3
relation.isAuthorOfPublication.latestForDiscoveryc5a4cc87-ceba-494d-95ab-d54b9b1a35e3
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