Weak Gravitational Lensing of the CMB: Bringing Dark Energy and Neutrino Masses into Focus

Details Weak Gravitational Lensing of the CMB: Bringing Dark Energy and Neutrino Masses into Focus Weak Gravitational Lensing of the CMB: Bringing Dark Energy and Neutrino Masses into Focus

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21532504d&link_type=abstract

American Astronomical Society, AAS Meeting #215, #325.04; Bulletin of the American Astronomical Society, Vol. 42, p.422

Physics

Scientific paper

Weak gravitational lensing of the cosmic microwave background (CMB) by large scale structure along the line of sight shuffles the pattern of temperature and polarization anisotropies on the sky. This makes the CMB sensitive to physics that affects the growth of structure at z=1-4, like massive neutrinos and dark energy.
I will discuss prospective constraints from CMB lensing by probes like Planck and a future CMBpol mission on three types of physics beyond standard LCDM: massive neutrinos, ordinary dynamical dark energy and early dark energy. I will also compare the constraining power of two methods for extracting the lensing signal from the CMB: smearing of power spectra vs the optimal quadratic estimator of the lensing potential power spectrum.

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