Scaling transformations and the origins of light relics constraints from cosmic microwave background observations
Scaling transformations and the origins of light relics constraints from cosmic microwave background observations
复制标题
宇宙微波背景观测的尺度变换和光遗迹约束的起源
DOI:
10.1103/physrevd.107.023517
复制
发表时间:
2023
影响因子:
5
通讯作者:
Knox, Lloyd
中科院分区:
文献类型:
--
作者:
Ge, Fei;Cyr-Racine, Francis-Yan;Knox, Lloyd
We use here a family of scaling transformations, that scale key rates in the evolution equations, to analytically understand constraints on light relics from cosmic microwave background (CMB) maps, given cosmological models of varying degrees of complexity. We describe the causes of physical effects that are fundamentally important to the constraining power of the data, with a focus on the two that are most novel. We use as a reference model a cosmological model that admits a scaling transformation that increases light relic energy density while avoiding all of these causes. Constraints on light relics in a given model can then be understood as due to the differences between the given model and the reference model, as long as the additional light relics only interact gravitationally with the Standard Model components. This understanding supports the development of cosmological models that can evade light relics constraints from CMB maps.
登录
查看更多内容
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
D. Fargion;M. Khlopov;C. Stephan
通讯作者:
C. Stephan
影响因子:
5
作者:
Jean;J. Cline
通讯作者:
J. Cline
影响因子:
5.4
作者:
R. Barbieri;L. Hall;K. Harigaya
通讯作者:
R. Barbieri;L. Hall;K. Harigaya
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
V. Fern'andez;E. Terlevich;Á. D́ıaz;R. Terlevich;F. Rosales
通讯作者:
F. Rosales
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
H. Goldberg;L. Hall
通讯作者:
L. Hall