CMB lensing constraints on dark energy and modified gravity scenarios

被引：29
|
作者：
Calabrese, Erminia [1 ,2 ,3 ]
Cooray, Asantha [3 ]
Martinelli, Matteo [1 ,2 ,4 ]
Melchiorri, Alessandro [1 ,2 ]
Pagano, Luca [1 ,2 ,5 ]
Slosar, Anze [6 ,7 ]
Smoot, George F. [6 ,7 ,8 ,9 ,10 ]
机构：
[1] Univ Roma La Sapienza, Dept Phys, I-00185 Rome, Italy
[2] Univ Roma La Sapienza, Ist Nazl Fis Nucl, I-00185 Rome, Italy
[3] Univ Calif Irvine, Dept Phys & Astron, Ctr Cosmol, Irvine, CA 92697 USA
[4] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA
[5] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
[6] Univ Calif Berkeley, Berkeley Ctr Cosmol Phys, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[7] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[8] Ewha Womans Univ, Inst Early Universe, Seoul, South Korea
[9] Ewha Adv Acad, Seoul, South Korea
[10] Univ Paris Diderot, Chaire Blaise Pascal, F-75205 Paris 13, France
来源：
PHYSICAL REVIEW D | 2009年 / 80卷 / 10期
关键词：
COSMOLOGICAL MODEL; ANGULAR VARIATIONS; PERTURBATIONS;
D O I：
10.1103/PhysRevD.80.103516
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Weak gravitational lensing leaves a characteristic imprint on the cosmic microwave background temperature and polarization angular power spectra. Here, we investigate the possible constraints on the integrated lensing potential from future cosmic microwave background angular spectra measurements expected from Planck and EPIC. We find that Planck and EPIC will constrain the amplitude of the integrated projected potential responsible for lensing at 6% and 1% level, respectively, with very little sensitivity to the shape of the lensing potential. We discuss the implications of such a measurement in constraining dark energy and modified gravity scalar-tensor theories. We then discuss the impact of a wrong assumption on the weak lensing potential amplitude on cosmological parameter inference.
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收藏
页数：10
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