TESTING CPT SYMMETRY WITH CURRENT AND FUTURE CMB MEASUREMENTS  
Li SY(李思宇); Xia JQ(夏俊卿); Li H(李虹); Zhang XM(张新民); Li, SY; Xia, JQ; Li, MZ; Li, H; Zhang, XM  
2015  
Source Publication  ASTROPHYSICAL JOURNAL 
ISSN  0004637X 
EISSN  15384357 
Volume  799Issue:2Pages:211 
Corresponding Author  夏俊卿 
Subtype  Article 
Abstract  In this paper, we use the current and future cosmic microwave background (CMB) experiments to test the ChargeParityTime Reversal (CPT) symmetry. We consider a CPTviolating interaction in the photon sector Lcs similar to p(mu)A(upsilon)(F) over tilde (mu upsilon), which gives rise to a rotation of the polarization vectors of the propagating CMB photons. By combining the 9 yr WMAP, BOOMERanG 2003, and BICEP1 observations, we obtain the current constraint on the isotropic rotation angle (alpha) over bar = 2.12 +/ 1.14 (1 sigma), indicating that the significance of the CPT violation is about 2 sigma. Here, we particularly take the systematic errors of CMB measurements into account. Then, we study the effects of the anisotropies of the rotation angle [Delta alpha((n) over cap)] on the CMB polarization power spectra in detail. Due to the small effects, the current CMB polarization data cannot constrain the related parameters very well. We obtain the 95% C.L. upper limit of the variance of the anisotropies of the rotation angle Calpha(0) < 0.035 from all of the CMB data sets. More interestingly, including the anisotropies of rotation angle could lower the bestfit value of r and relax the tension on the constraints of r between BICEP2 and Planck. Finally, we investigate the capabilities of future Planck polarization measurements on <(alpha)over bar> a and Delta alpha((n) over cap). Benefited from the high precision of Planck data, the constraints of the rotation angle can be significantly improved. 
Keyword  cosmic background radiation cosmological parameters cosmology: theory 
Subject Area  Astronomy & Astrophysics 
DOI  10.1088/0004637X/799/2/211 
Indexed By  SCI ; INSPIREHEP ; ADS 
Language  英语 
WOS Research Area  Astronomy & Astrophysics 
WOS Subject  Astronomy & Astrophysics 
WOS ID  WOS:000348820900098 
ADS Bibcode  2015ApJ...799..211L 
ADS URL  https://ui.adsabs.harvard.edu/abs/2015ApJ...799..211L 
ADS CITATIONS  https://ui.adsabs.harvard.edu/abs/2015ApJ...799..211L/citations 
inspireid  1297466 
inspireURL  https://inspirehep.net/literature/1297466 
Citation statistics 
Cited Times:21 [INSPIRE]
Cited Times:22 [ADS]

Document Type  期刊论文 
Identifier  http://ir.ihep.ac.cn/handle/311005/228120 
Collection  粒子天体物理中心 
Recommended Citation GB/T 7714  Li SY,Xia JQ,Li H,et al. TESTING CPT SYMMETRY WITH CURRENT AND FUTURE CMB MEASUREMENTS[J]. ASTROPHYSICAL JOURNAL,2015,799(2):211. 
APA  李思宇.,夏俊卿.,李虹.,张新民.,Li, SY.,...&Zhang, XM.(2015).TESTING CPT SYMMETRY WITH CURRENT AND FUTURE CMB MEASUREMENTS.ASTROPHYSICAL JOURNAL,799(2),211. 
MLA  李思宇,et al."TESTING CPT SYMMETRY WITH CURRENT AND FUTURE CMB MEASUREMENTS".ASTROPHYSICAL JOURNAL 799.2(2015):211. 
Files in This Item:  
File Name/Size  DocType  Version  Access  License 
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment