A comparison of Einstein-Boltzmann solvers for testing General Relativity

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dc.contributor.authorBellini, Emilio
dc.contributor.authorBarreira, A.
dc.contributor.authorFrusciante, N.
dc.contributor.authorBallardini, M.
dc.date.accessioned2018-03-01T13:53:11Z
dc.date.available2018-03-01T13:53:11Z
dc.date.issued2018
dc.description.abstractWe compare Einstein-Boltzmann solvers that include modifications to General Relativity and find that, for a wide range of models and parameters, they agree to a high level of precision. We look at three general purpose codes that primarily model general scalar-tensor theories, three codes that model Jordan-Brans-Dicke (JBD) gravity, a code that models f (R) gravity, a code that models covariant Galileons, a code that models Hoˇrava- Lifschitz gravity and two codes that model non-local models of gravity. Comparing predictions of the angular power spectrum of the cosmic microwave background and the power spectrum of dark matter for a suite of different models, we find agreement at the sub-percent level. This means that this suite of Einstein-Boltzmann solvers is now sufficiently accurate for precision constraints on cosmological and gravitational parameters.en_US
dc.identifier.citationBellini, E. et al. (2018). A comparison of Einstein-Boltzmann solvers for testing General Relativity. Physical Review D, 97: 023520en_US
dc.identifier.issn2470-0010
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevD.97.023520
dc.identifier.urihttp://hdl.handle.net/10566/3559
dc.language.isoenen_US
dc.privacy.showsubmitterFALSE
dc.publisherAmerican Physical Societyen_US
dc.rightsThis is the pre-print version (From arXiv:1709.09135) of teh article published online at: http://dx.doi.org/10.1103/PhysRevD.97.023520
dc.status.ispeerreviewedTRUE
dc.subjectGeneral Relativityen_US
dc.subjectEinstein-Boltzmann solversen_US
dc.subjectscalar-tensor theoriesen_US
dc.titleA comparison of Einstein-Boltzmann solvers for testing General Relativityen_US
dc.typeArticleen_US

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