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.

doi:10.1103/physrevd.97.023520

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.

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

Professor Baojiu Li baojiu.li@durham.ac.uk
Professor

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	Feb 8, 2018
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
Public URL	https://durham-repository.worktribe.com/output/1335158

Files

Published Journal Article (2.6 Mb)
PDF

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.