Secondary CMB Anisotropy - Wayne Hu's Tutorials
Secondary CMB Anisotropy - Wayne Hu's Tutorials
Secondary CMB Anisotropy - Wayne Hu's Tutorials
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Polarization Lensing<br />
• Polarization field harmonics lensed similarly<br />
so that<br />
<br />
[Q ± iU](ˆn) = −<br />
[Q ± iU](ˆn) = [ ˜ Q ± iŨ](ˆn + ∇φ)<br />
d 2 l<br />
(2π) 2 [E ± iB](l)e±2iφl e l·ˆn<br />
≈ [ ˜ Q ± i Ũ](ˆn) + ∇iφ(ˆn)∇ i [ ˜ Q ± i Ũ](ˆn)<br />
+ 1<br />
2 ∇iφ(ˆn)∇jφ(ˆn)∇ i ∇ j [ ˜ Q ± i Ũ](ˆn)