A probe of primordial gravity waves and vorticity

被引:666
|
作者
Kamionkowski, M
Kosowsky, A
Stebbins, A
机构
[1] HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138
[2] HARVARD UNIV,LYMAN LAB,DEPT PHYS,CAMBRIDGE,MA 02138
[3] FERMILAB NATL ACCELERATOR LAB,NASA,FERMILAB ASTROPHYS CTR,BATAVIA,IL 60510
关键词
D O I
10.1103/PhysRevLett.78.2058
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A formalism for describing an all-sky map of the polarization of the cosmic microwave background is presented. The polarization pattern on the sky can be decomposed into two geometrically distinct components. One of these components is not coupled to density inhomogeneities. A nonzero amplitude for this component of polarization can only be caused by tensor or vector metric perturbations. This allows unambiguous identification of long-wavelength gravity waves or large-scale vortical flows at the time of last scattering.
引用
收藏
页码:2058 / 2061
页数:4
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