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Testing CPT symmetry with CMB measurements
Xia JQ(夏俊卿); Xia, JQ; Li, H; Wang, X; Zhang, X
2008
Source PublicationASTRONOMY & ASTROPHYSICS
Volume483Issue:3Pages:715-718
Corresponding Author[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
SubtypeArticle
AbstractAims. 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.
Keywordcosmology : theory cosmology : cosmic microwave background cosmology : cosmological parameters
Subject AreaAstronomy & Astrophysics
DOI10.1051/0004-6361:200809410
URL查看原文
Indexed ByINSPIREHEP
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000255953100009
inspireid764546
inspireURLhttps://inspirehep.net/literature/764546
Citation statistics
Cited Times:70 [INSPIRE]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/238331
Collection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
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
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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