CMB weak-lensing beyond the Born approximation: a numerical approach

Weak lensing of the CMB: A harmonic approach

Weak lensing of CMB anisotropies and polarization for the power spectra and higher order statistics can be handled directly in harmonic-space without recourse to real-space correlation functions. For the power spectra, this approach not only simplifies the calculations but is also readily generalized from the usual flat-sky approximation to the exact all-sky form by replacing Fourier harmonics ...

Weak Gravitational Lensing of the CMB

Weak gravitational lensing has several important effects on the cosmic microwave background (CMB): it changes the CMB power spectra, induces non-Gaussianities, and generates a B-mode polarization signal that is an important source of confusion for the signal from primordial gravitational waves. The lensing signal can also be used to help constrain cosmological parameters and lensing mass distri...

Weak Lensing Detection in CMB Maps

The weak lensing effects are known to change only weakly the shape of the power spectrum of the Cosmic Microwave Background (CMB) temperature fluctuations. I show here that they nonetheless induce specific non-Gaussian effects that can be detectable with the fourpoint correlation function of the CMB anisotropies. The magnitude and geometrical dependences of this correlation function are investi...

Impact of post-Born lensing on the CMB

Weak Lensing of the CMB by Large-Scale Structure

Several recent papers have studied lensing of the CMB by large-scale structures, which probes the projected matter distribution from z = 10 to z ≃ 0. This interest is motivated in part by upcoming high resolution, high sensitivity CMB experiments, such as APEX/SZ, ACT, SPT or Planck, which should be sensitive to lensing. In this paper we examine the reconstruction of the large-scale dark matter...