期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2017/02/043
关键词
cosmological neutrinos; modified gravity; neutrino astronomy; neutrino masses from cosmology
资金
- Spanish MINECO [BES-2015-073372]
- Beatriu de Pinos grant
- Chinese National Youth Thousand Talents Program
- Spanish Mineco grants [AYA2014-58747-P, FPA2014-57816-P]
- GVA grant of ICCUB (Unidad de Excelencia Maria de Maeztu) [PROMETEOII/2014/050, MDM-2014-0369]
- EU projects [H2020-MSCA-ITN-2015//674896-ELUSIVES, H2020-MSCA-RISE-2015]
- ICREA Funding Source: Custom
Cosmological observables show a dependence with the neutrino mass, which is partially degenerate with parameters of extended models of gravity. We study and explore this degeneracy in Horndeski generalized scalar-tensor theories of gravity. Using forecasted cosmic microwave background and galaxy power spectrum datasets, we find that a single parameter in the linear regime of the effective theory dominates the correlation with the total neutrino mass. For any given mass, a particular value of this parameter approximately cancels the power suppression due to the neutrino mass at a given redshift. The extent of the cancellation of this degeneracy depends on the cosmological large-scale structure data used at different redshifts. We constrain the parameters and functions of the effective gravity theory and determine the influence of gravity on the determination of the neutrino mass from present and future surveys.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据