Comparison of Einstein-Boltzmann solvers for testing general relativity
We 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...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
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American Physical Society
2018
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| _version_ | 1797086774374170624 |
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| author | Bellini, E Barreira, A Frusciante, N Hu, B Peirone, S Raveri, M Zumalacárregui, M Avilez-Lopez, A Ballardini, M Battye, R Bolliet, B Calabrese, E Dirian, Y Ferreira, P Finelli, F Huang, Z Ivanov, M Lesgourgues, J Li, B Lima, N Pace, F Paoletti, D Sawicki, I Silvestri, A Skordis, C Umiltà, C Vernizzi, F |
| author_facet | Bellini, E Barreira, A Frusciante, N Hu, B Peirone, S Raveri, M Zumalacárregui, M Avilez-Lopez, A Ballardini, M Battye, R Bolliet, B Calabrese, E Dirian, Y Ferreira, P Finelli, F Huang, Z Ivanov, M Lesgourgues, J Li, B Lima, N Pace, F Paoletti, D Sawicki, I Silvestri, A Skordis, C Umiltà, C Vernizzi, F |
| author_sort | Bellini, E |
| collection | OXFORD |
| description | We 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 Ho\v{r}ava-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. |
| first_indexed | 2024-03-07T02:26:47Z |
| format | Journal article |
| id | oxford-uuid:a5e1556a-8cec-4469-aea5-72d932009f7f |
| institution | University of Oxford |
| last_indexed | 2024-03-07T02:26:47Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:a5e1556a-8cec-4469-aea5-72d932009f7f2022-03-27T02:43:30ZComparison of Einstein-Boltzmann solvers for testing general relativityJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a5e1556a-8cec-4469-aea5-72d932009f7fSymplectic Elements at OxfordAmerican Physical Society2018Bellini, EBarreira, AFrusciante, NHu, BPeirone, SRaveri, MZumalacárregui, MAvilez-Lopez, ABallardini, MBattye, RBolliet, BCalabrese, EDirian, YFerreira, PFinelli, FHuang, ZIvanov, MLesgourgues, JLi, BLima, NPace, FPaoletti, DSawicki, ISilvestri, ASkordis, CUmiltà, CVernizzi, FWe 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 Ho\v{r}ava-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. |
| spellingShingle | Bellini, E Barreira, A Frusciante, N Hu, B Peirone, S Raveri, M Zumalacárregui, M Avilez-Lopez, A Ballardini, M Battye, R Bolliet, B Calabrese, E Dirian, Y Ferreira, P Finelli, F Huang, Z Ivanov, M Lesgourgues, J Li, B Lima, N Pace, F Paoletti, D Sawicki, I Silvestri, A Skordis, C Umiltà, C Vernizzi, F Comparison of Einstein-Boltzmann solvers for testing general relativity |
| title | Comparison of Einstein-Boltzmann solvers for testing general
relativity |
| title_full | Comparison of Einstein-Boltzmann solvers for testing general
relativity |
| title_fullStr | Comparison of Einstein-Boltzmann solvers for testing general
relativity |
| title_full_unstemmed | Comparison of Einstein-Boltzmann solvers for testing general
relativity |
| title_short | Comparison of Einstein-Boltzmann solvers for testing general
relativity |
| title_sort | comparison of einstein boltzmann solvers for testing general relativity |
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