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Comparison of Einstein-Boltzmann solvers for testing general relativity

Bellini, E.; Barreira, A.; Frusciante, N.; Hu, B.; Peirone, S.; Raveri, M.; Zumalacárregui, M.; Avilez-Lopez, A.; Ballardini, M.; Battye, R. A.; Bolliet, B.; Calabrese, E.; Dirian, Y.; Ferreira, P. G.; Finelli, F.; Huang, Z.; Ivanov, M. M.; Lesgourgues, J.; Li, B.; Lima, N. A.; Pace, F.; Paoletti, D.; Sawicki, I.; Silvestri, A.; Skordis, C.; Umiltà, C.; Vernizzi, F.

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Authors

E. Bellini

A. Barreira

N. Frusciante

B. Hu

S. Peirone

M. Raveri

M. Zumalacárregui

A. Avilez-Lopez

M. Ballardini

R. A. Battye

B. Bolliet

E. Calabrese

Y. Dirian

P. G. Ferreira

F. Finelli

Z. Huang

M. M. Ivanov

J. Lesgourgues

N. A. Lima

F. Pace

D. Paoletti

I. Sawicki

A. Silvestri

C. Skordis

C. Umiltà

F. Vernizzi



Abstract

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-BransDicke (JBD) gravity, a code that models fðRÞ gravity, a code that models covariant Galileons, a code that models Horava-Lifschitz gravity, and two codes that model nonlocal models of gravity. Comparing ˇ 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 subpercent level. This means that this suite of Einstein-Boltzmann solvers is now sufficiently accurate for precision constraints on cosmological and gravitational parameters.

Citation

Bellini, E., Barreira, A., Frusciante, N., Hu, B., Peirone, S., Raveri, M., …Vernizzi, F. (2018). Comparison of Einstein-Boltzmann solvers for testing general relativity. Physical Review D, 97(2), Article 023520. https://doi.org/10.1103/physrevd.97.023520

Journal Article Type Article
Acceptance Date Oct 6, 2018
Online Publication Date Jan 22, 2018
Publication Date Jan 22, 2018
Deposit Date Feb 8, 2018
Publicly Available Date Mar 28, 2024
Journal Physical Review D
Print ISSN 2470-0010
Electronic ISSN 2470-0029
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 97
Issue 2
Article Number 023520
DOI https://doi.org/10.1103/physrevd.97.023520

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Copyright Statement
Reprinted with permission from the American Physical Society: Bellini, E., Barreira, A., Frusciante, N., Hu, B., Peirone, S., Raveri, M., Zumalacárregui, M., Avilez-Lopez, A., Ballardini, M., Battye, R. A., Bolliet, B., Calabrese, E., Dirian, Y., Ferreira, P. G., Finelli, F., Huang, Z., Ivanov, M. M., Lesgourgues, J., Li, B., Lima, N. A., Pace, F., Paoletti, D., Sawicki, I., Silvestri, A., Skordis, C., Umiltà, C. & Vernizzi, F. (2018). Comparison of Einstein-Boltzmann solvers for testing general relativity. Physical Review D 97(2): 023520 © 2018 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.





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