{"volume":78,"oa":1,"quality_controlled":"1","publication_identifier":{"issn":["1550-7998","1550-2368"]},"intvolume":"        78","extern":"1","date_created":"2024-09-06T09:49:53Z","type":"journal_article","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","publication":"Physical Review D","publisher":"American Physical Society","day":"10","main_file_link":[{"open_access":"1","url":" https://doi.org/10.48550/arXiv.0808.2208"}],"doi":"10.1103/physrevd.78.103509","oa_version":"Preprint","article_number":"103509","year":"2008","scopus_import":"1","title":"Challenges to the DGP model from horizon-scale growth and geometry","issue":"10","_id":"17762","article_processing_charge":"No","date_updated":"2024-09-30T09:16:05Z","abstract":[{"lang":"eng","text":"We conduct a Markov Chain Monte Carlo study of the Dvali-Gabadadze-Porrati self-accelerating braneworld scenario given the cosmic microwave background (CMB) anisotropy, supernovae and Hubble constant data by implementing an effective dark energy prescription for modified gravity into a standard Einstein-Boltzmann code. We find no way to alleviate the tension between distance measures and horizon-scale growth in this model. Growth alterations due to perturbations propagating into the bulk appear as excess CMB anisotropy at the lowest multipoles. In a flat cosmology, the maximum likelihood Dvali-Gabadadze-Porrati model is nominally a 5.3⁢𝜎 poorer fit than 𝛬⁢CDM. Curvature can reduce the tension between distance measures but only at the expense of exacerbating the problem with growth leading to a 4.8⁢𝜎 result that is dominated by the low multipole CMB temperature spectrum. While changing the initial conditions to reduce large-scale power can flatten the temperature spectrum, this also suppresses the large angle polarization spectrum in violation of recent results from the five-year Wilkinson Microwave Anisotropy Probe. The failure of this model highlights the power of combining growth and distance measures in cosmology as a test of gravity on the largest scales."}],"external_id":{"arxiv":["0808.2208"]},"author":[{"full_name":"Fang, Wenjuan","last_name":"Fang","first_name":"Wenjuan"},{"full_name":"Wang, Sheng","last_name":"Wang","first_name":"Sheng"},{"first_name":"Wayne","last_name":"Hu","full_name":"Hu, Wayne"},{"id":"7c006e8c-cc0d-11ee-8322-cb904ef76f36","full_name":"Haiman, Zoltán","last_name":"Haiman","first_name":"Zoltán"},{"full_name":"Hui, Lam","last_name":"Hui","first_name":"Lam"},{"full_name":"May, Morgan","last_name":"May","first_name":"Morgan"}],"language":[{"iso":"eng"}],"month":"11","article_type":"original","date_published":"2008-11-10T00:00:00Z","publication_status":"published","status":"public","citation":{"short":"W. Fang, S. Wang, W. Hu, Z. Haiman, L. Hui, M. May, Physical Review D 78 (2008).","chicago":"Fang, Wenjuan, Sheng Wang, Wayne Hu, Zoltán Haiman, Lam Hui, and Morgan May. “Challenges to the DGP Model from Horizon-Scale Growth and Geometry.” <i>Physical Review D</i>. American Physical Society, 2008. <a href=\"https://doi.org/10.1103/physrevd.78.103509\">https://doi.org/10.1103/physrevd.78.103509</a>.","ama":"Fang W, Wang S, Hu W, Haiman Z, Hui L, May M. Challenges to the DGP model from horizon-scale growth and geometry. <i>Physical Review D</i>. 2008;78(10). doi:<a href=\"https://doi.org/10.1103/physrevd.78.103509\">10.1103/physrevd.78.103509</a>","apa":"Fang, W., Wang, S., Hu, W., Haiman, Z., Hui, L., &#38; May, M. (2008). Challenges to the DGP model from horizon-scale growth and geometry. <i>Physical Review D</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physrevd.78.103509\">https://doi.org/10.1103/physrevd.78.103509</a>","mla":"Fang, Wenjuan, et al. “Challenges to the DGP Model from Horizon-Scale Growth and Geometry.” <i>Physical Review D</i>, vol. 78, no. 10, 103509, American Physical Society, 2008, doi:<a href=\"https://doi.org/10.1103/physrevd.78.103509\">10.1103/physrevd.78.103509</a>.","ista":"Fang W, Wang S, Hu W, Haiman Z, Hui L, May M. 2008. Challenges to the DGP model from horizon-scale growth and geometry. Physical Review D. 78(10), 103509.","ieee":"W. Fang, S. Wang, W. Hu, Z. Haiman, L. Hui, and M. May, “Challenges to the DGP model from horizon-scale growth and geometry,” <i>Physical Review D</i>, vol. 78, no. 10. American Physical Society, 2008."}}