CMB Lensing Constraints on Neutrinos and Dark Energy

Abstract

Signatures of lensing of the cosmic microwave background radiation by gravitational potentials along the line of sight carry with them information on the matter distribution, neutrino masses, and dark energy properties. We examine the constraints that Planck, PolarBear, and CMBpol future data, including from the B-mode polarization or the lensing potential, will be able to place on these quantities. We simultaneously fit for neutrino mass and dark energy equation of state including time variation and early dark energy density, and compare the use of polarization power spectra with an optimal quadratic estimator of the lensing. Results are given as a function of systematics level from residual foreground contamination. A realistic CMBpol experiment can effectively constrain the sum of neutrino masses to within 0.05 eV and the fraction of early dark energy to 0.002. We also present a surprisingly simple prescription for calculating dark energy equation of state constraints in combination with supernova distances from JDEM.

18 pages, 14 figures. Small changes made to match version to be published in Phys. Rev. D

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Cited by in corpus (13)

• Imperfect Dark Energy from Kinetic Gravity Braiding
• ACTPol: A polarization-sensitive receiver for the Atacama Cosmology Telescope
• A Measurement of the Correlation of Galaxy Surveys with CMB Lensing Convergence Maps from the South Pole Telescope
• Future CMB Constraints on Early, Cold, or Stressed Dark Energy
• A Measurement of Gravitational Lensing of the Cosmic Microwave Background Using SPT-3G 2018 Data
• Non-Gaussian structure of the lensed CMB power spectra covariance matrix
• Constraining Fundamental Physics with Future CMB Experiments
• Distinguishing between Neutrinos and time-varying Dark Energy through Cosmic Time
• A fast particle-mesh simulation of non-linear cosmological structure formation with massive neutrinos
• SPIDER: a balloon-borne CMB polarimeter for large angular scales
• Robust and efficient CMB lensing power spectrum from polarization surveys
• Reducing Zero-point Systematics in Dark Energy Supernova Experiments
• By Dawn's Early Light: CMB Polarization Impact on Cosmological Constraints