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COLA with scale-dependent growth: applications to screened modified gravity models
Winther, Hans A.1; Koyama, Kazuya1; Manera, Marc3,4; Wright, Bill S.1; Zhao, Gong-Bo1,2
2017-08-01
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Issue8
AbstractWe present a general parallelized and easy-to-use code to perform numerical simulations of structure formation using the COLA (COmoving Lagrangian Acceleration) method for cosmological models that exhibit scale-dependent growth at the level of first and second order Lagrangian perturbation theory. For modified gravity theories we also include screening using a fast approximate method that covers all the main examples of screening mechanisms in the literature. We test the code by comparing it to full simulations of two popular modified gravity models, namely f(R) gravity and nDGP, and find good agreement in the modified gravity boost-factors relative to ACDM even when using a fairly small number of COLA time steps.
SubtypeArticle
KeywordCosmological Simulations Modified Gravity
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/1475-7516/2017/08/006
WOS KeywordCOMPARISON PROJECT ; CODE ; CATALOGS ; COSMOLOGY ; GENERATION ; MATTER ; RAMSES ; BRANE ; MASS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000408311900006
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/20139
Collection星系宇宙学研究部
Affiliation1.Univ Portsmouth, Inst Cosmol & Gravitat, Dennis Sciama Bldg,Burnaby Rd, Portsmouth PO1 3FX, Hants, England
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.Univ Cambridge, Dept Appl Math & Theoret Phys, Ctr Theoret Cosmol, Wilberforce Rd, Cambridge CB3 0WA, England
4.Univ Cambridge, Kavli Inst Cosmol, Madingley Rd, Cambridge CB3 0HA, England
Recommended Citation
GB/T 7714
Winther, Hans A.,Koyama, Kazuya,Manera, Marc,et al. COLA with scale-dependent growth: applications to screened modified gravity models[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2017(8).
APA Winther, Hans A.,Koyama, Kazuya,Manera, Marc,Wright, Bill S.,&Zhao, Gong-Bo.(2017).COLA with scale-dependent growth: applications to screened modified gravity models.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(8).
MLA Winther, Hans A.,et al."COLA with scale-dependent growth: applications to screened modified gravity models".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .8(2017).
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