B-mode polarization induced by gravitational waves from kinks on infinite cosmic strings

Details B-mode polarization induced by gravitational waves from kinks on infinite cosmic strings B-mode polarization induced by gravitational waves from kinks on infinite cosmic strings

2010-03-19

arxiv.org/abs/1003.3701v3

Phys.Rev.D82:103504,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

13 pages, 1 figure

Scientific paper

10.1103/PhysRevD.82.103504

We investigate the effect of the stochastic gravitational wave (GW) background produced by kinks on infinite cosmic strings, whose spectrum was derived in our previous work, on the B-mode power spectrum of the cosmic microwave background (CMB) anisotropy. We find that the B-mode polarization due to kinks is comparable to that induced by the motion of the string network and hence the contribution of GWs from kinks is important for estimating the B-mode power spectrum originating from cosmic strings. If the tension of cosmic strings \mu is large enough i.e., G\mu >~ 10^{-8}, B-mode polarization induced by cosmic strings can be detected by future CMB experiments.

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