NAOC Open IR
Testing interacting dark matter and dark energy model with cosmological data
Cheng, Gong1,2; Ma, Yin-Zhe3,4; Wu, Fengquan1; Zhang, Jiajun5; Chen, Xuelei1,2,6
2020-08-17
Source PublicationPHYSICAL REVIEW D
ISSN1550-7998
Volume102Issue:4Pages:10
AbstractWe investigate the model of dark matter-dark energy (DM-DE) interaction with coupling strength proportional to the multiplication of dark sector densities with different power indices Q = gamma rho(a)(c)rho(beta)(d). We first investigate the modification of the cosmic expansion history, and then further develop the formalism to take into account the cosmological perturbations and dark matter temperature evolution. We then use the latest observational cosmology data, including cosmic microwave background (CMB) data, baryon acoustic oscillations (BAO) data, redshift-space distortion (RSD) data and Type Ia supernovae (SNe) data to constrain the model parameters. We find in the phantom region, a positive alpha is preferred by the data above 2 sigma statistic significance. If we choose the power indices to be integers or half-integers for plausible physics of particle interaction, the allowed values within 1 sigma confidence regions are alpha = 0.5 and beta = 0, 0.5, 1. The inclusion of BAO and RSD data from large-scale structure and SNe data improves the constraints significantly. Our model predicts lower values of f(z)sigma(8)(z) at z < 1 comparing to Lambda CDM model, which alleviates the tension of Lambda CDM with various RSD data from optical galaxy surveys. Overall, the DM-DE interaction model is consistent with the current observational data, especially providing a better fit to the RSD data.
Funding OrganizationNSFC ; NSFC ; MoST ; MoST ; CAS ; CAS ; NRF ; NRF ; IBS ; IBS ; NSFC ; NSFC ; MoST ; MoST ; CAS ; CAS ; NRF ; NRF ; IBS ; IBS ; NSFC ; NSFC ; MoST ; MoST ; CAS ; CAS ; NRF ; NRF ; IBS ; IBS ; NSFC ; NSFC ; MoST ; MoST ; CAS ; CAS ; NRF ; NRF ; IBS ; IBS
DOI10.1103/PhysRevD.102.043517
WOS KeywordBARYON ACOUSTIC-OSCILLATIONS ; MAIN GALAXY SAMPLE ; REDSHIFT 0.8 ; GROWTH-RATE ; I.
Language英语
Funding ProjectNSFC[11828301] ; NSFC[11633004] ; NSFC[11473044] ; NSFC[U1501501] ; MoST[2016YFE0100300] ; CAS[QYZDJ-SSW-SLH017] ; CAS[XDB 23040100] ; NRF[105925] ; NRF[109577] ; NRF[120385] ; NRF[120378] ; IBS[IBS-R018-D1]
Funding OrganizationNSFC ; NSFC ; MoST ; MoST ; CAS ; CAS ; NRF ; NRF ; IBS ; IBS ; NSFC ; NSFC ; MoST ; MoST ; CAS ; CAS ; NRF ; NRF ; IBS ; IBS ; NSFC ; NSFC ; MoST ; MoST ; CAS ; CAS ; NRF ; NRF ; IBS ; IBS ; NSFC ; NSFC ; MoST ; MoST ; CAS ; CAS ; NRF ; NRF ; IBS ; IBS
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000559926300001
PublisherAMER PHYSICAL SOC
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/82358
Collection中国科学院国家天文台
Corresponding AuthorCheng, Gong
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, 20A Datun Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.Univ KwaZulu Natal, Sch Chem & Phys, Westville Campus,Private Bag X54001, Durban, South Africa
4.Univ Kwazulu Natal, NAOC UKZN Computat Astrophys Ctr NUCAC, ZA-4000 Durban, South Africa
5.Inst Basic Sci IBS, Ctr Theoret Phys Universe, Daejeon 34126, South Korea
6.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Cheng, Gong,Ma, Yin-Zhe,Wu, Fengquan,et al. Testing interacting dark matter and dark energy model with cosmological data[J]. PHYSICAL REVIEW D,2020,102(4):10.
APA Cheng, Gong,Ma, Yin-Zhe,Wu, Fengquan,Zhang, Jiajun,&Chen, Xuelei.(2020).Testing interacting dark matter and dark energy model with cosmological data.PHYSICAL REVIEW D,102(4),10.
MLA Cheng, Gong,et al."Testing interacting dark matter and dark energy model with cosmological data".PHYSICAL REVIEW D 102.4(2020):10.
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