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Testing CPT symmetry with CMB measurements
Xia JQ(夏俊卿); Xia, JQ; Li, H; Wang, X; Zhang, X
2008
发表期刊ASTRONOMY & ASTROPHYSICS
卷号483期号:3页码:715-718
通讯作者[Xia, J. -Q. ; Zhang, X.] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Li, H.] Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China ; [Wang, X.] Univ Bielefeld, Fak Phys, D-33615 Bielefeld, Germany
文章类型Article
摘要Aims. We study the possibility of testing Charge-Parity-Time Reversal symmetry (CPT) with cosmic microwave background (CMB) measurements. Methods. Working with an effective lagrangian of the photon with CPT violation L similar to p(mu)A(nu)(F) over tilde (mu nu), which causes the polarization vectors of the propagating CMB photons to be rotated, we determine the rotation angle. a using the BOOMERanG 2003 and the WMAP3 angular power spectra. Results. In this analysis, we have included the newly-released TC and GC (l < 450) information of WMAP3 and found Delta alpha = - 6.2 +/- 3.8 deg at a 68% confidence level. Conclusions. This result slightly increases the significance for the CPT violation obtained in our previous paper (Feng et al. 2006). Delta alpha = - 6.0 +/- 4.0 deg (1 sigma). Furthermore, we examine the constraint on the rotation angle from the simulated polarization data with Planck precision. Our results show that the future Planck measurement will be sensitive to. a at the level of 0.057 deg and will be able to test the CPT symmetry with a higher precision.
关键词cosmology : theory cosmology : cosmic microwave background cosmology : cosmological parameters
学科领域Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics ; Astronomy & Astrophysics
DOI10.1051/0004-6361:200809410
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000255953100009
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被引频次:57[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238331
专题理论物理室
实验物理中心
粒子天体物理中心
中国科学院高能物理研究所_中国散裂中子源
作者单位中国科学院高能物理研究所
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Xia JQ,Xia, JQ,Li, H,et al. Testing CPT symmetry with CMB measurements[J]. ASTRONOMY & ASTROPHYSICS,2008,483(3):715-718.
APA 夏俊卿,Xia, JQ,Li, H,Wang, X,&Zhang, X.(2008).Testing CPT symmetry with CMB measurements.ASTRONOMY & ASTROPHYSICS,483(3),715-718.
MLA 夏俊卿,et al."Testing CPT symmetry with CMB measurements".ASTRONOMY & ASTROPHYSICS 483.3(2008):715-718.
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