Skip to main content

Research Repository

Advanced Search

Approximation methods in modified gravity models

Li, Baojiu

Approximation methods in modified gravity models Thumbnail



We review some of the commonly used approximation methods to predict large-scale structure formation in modified gravity (MG) models for the cosmic acceleration. These methods are developed to speed up the often slow N-body simulations in these models, or directly make approximate predictions of relevant physical quantities. In both cases, they are orders of magnitude more efficient than full simulations, making it possible to explore and delineate the large cosmological parameter space. On the other hand, there is a wide variation of their accuracies and ranges of validity, and these are usually not known a priori and must be validated against simulations. Therefore, a combination of full simulations and approximation methods will offer both efficiency and reliability. The approximation methods are also important from a theoretical point of view, since they can often offer useful insight into the nonlinear physics in MG models and inspire new algorithms for simulations.


Li, B. (2018). Approximation methods in modified gravity models. International Journal of Modern Physics D, 27(15), Article 1848004.

Journal Article Type Article
Acceptance Date Jul 9, 2018
Online Publication Date Aug 13, 2018
Publication Date Dec 1, 2018
Deposit Date Dec 14, 2018
Publicly Available Date Aug 13, 2019
Journal International Journal of Modern Physics D
Print ISSN 0218-2718
Electronic ISSN 1793-6594
Publisher World Scientific Publishing
Peer Reviewed Peer Reviewed
Volume 27
Issue 15
Article Number 1848004


Accepted Journal Article (5.2 Mb)

Copyright Statement
Electronic version of an article published as International Journal of Modern Physics D, Published: 13 August 2018 10.1142/S0218271818480048 © copyright World Scientific Publishing Company

You might also like

Downloadable Citations