An efficient probe of the cosmological CPT violation

An efficient probe of the cosmological CPT violation
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宇宙学 CPT 破坏的有效探测

DOI:
10.1088/1475-7516/2015/07/032
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发表时间:
2015-04
期刊:
JCAP
影响因子:
--
通讯作者:
Xinmin Zhang
Xinmin Zhang
中科院分区:
其他
文献类型:
--
作者:
Gong-Bo Zhao;Yuting Wang;Jun-Qing Xia;Mingzhe Li;Xinmin Zhang

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我们开发了一个有效的方法的基础上的线性回归算法来探测宇宙CPT违反使用CMB偏振数据。我们使用模拟CMB数据验证了这种方法,并将其应用于最近的CMB观测。我们发现,BICEP 1和BOOMERanG 2003的组合数据样本有利于在2.3σ置信水平下的非零各向同性旋转角,即,=−3.3o±1.4o(68% CL),包括系统分类。
We develop an efficient method based on the linear regression algorithm to probe the cosmological CPT violation using the CMB polarisation data. We validate this method using simulated CMB data and apply it to recent CMB observations. We find that a combined data sample of BICEP1 and BOOMERanG 2003 favours a nonzero isotropic rotation angle at 2.3σ confidence level, i.e., ᾱ=−3.3o±1.4o (68% CL) with systematics included.
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