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run lens_img2.py, which produces an unlensed primary CMB map according to the input spectrum.
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run lens_template.py, which produces a inverse square(or cubic) lensing potential map.
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run dif_matrix.py , which produce a matrix of computing 2d gradient.
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run mixing.py, which produces the lensed CMB map.
Unlensed CMB map
Lensing map
Lensed CMB map