Lensed Cosmic Microwave Background Constraints on Post-General Relativity Parameters

Abstract

The constraints on departures from general relativity (GR) at cosmological length scales due to cosmic microwave background (CMB) data are discussed. The departure from GR is measured by the ratio, parameterized as $1+{\varpi }_0(1+z{)}^{-S}$, between the gravitational potentials conventionally appearing in the geodesic equation and the Poisson equation. Current CMB data indicate ${\varpi }_0=1.67_{-1.87}^{+3.07}$ at the 2$\sigma$ confidence level, while $S$ remains unconstrained. The departure from GR affects the lensing conversion of E-mode into B-mode polarization. Hence, the lensing measurements from a future CMBpol experiment should be able to improve the constraints to ${\varpi }_0<0.30$ for a fiducial ${\varpi }_0=0$ model and independent of $S$.

4 pages, 2 figures

References in corpus (30)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Cosmological parameters from CMB and other data: a Monte-Carlo approach
• 4D Gravity on a Brane in 5D Minkowski Space
• Is Cosmic Speed-Up Due to New Gravitational Physics?
• Cosmological Perturbation Theory in the Synchronous and Conformal Newtonian Gauges
• Cosmological Perturbation Theory in the Synchronous vs. Conformal Newtonian Gauge
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
• Weak Gravitational Lensing of the CMB
• Mass Reconstruction with CMB Polarization
• Gravitational Lensing Effect on Cosmic Microwave Background Polarization
• The Sunyaev-Zel'dovich angular power spectrum as a probe of cosmological parameters
• A Parameterized Post-Friedmann Framework for Modified Gravity
• Large Scale Structure as a Probe of Gravitational Slip
• High resolution CMB power spectrum from the complete ACBAR data set
• Distinguishing Modified Gravity from Dark Energy
• Cosmic Microwave Weak lensing data as a test for the dark universe
• Differentiating between Modified Gravity and Dark Energy
• Separating Dark Physics from Physical Darkness: Minimalist Modified Gravity vs. Dark Energy
• Lensing Reconstruction with CMB Temperature and Polarization
• Analyzing weak lensing of the cosmic microwave background using the likelihood function
• On the Growth of Perturbations as a Test of Dark Energy
• The acceleration of the universe and the physics behind it
• Lensed CMB simulation and parameter estimation
• Weak lensing in scalar-tensor theories of gravity
• Constraints on a New Post-General Relativity Cosmological Parameter
• Parametrized Post-Friedmann Signatures of Acceleration in the CMB
• Large Scale Pressure Fluctuations and Sunyaev-Zel'dovich Effect
• Weak lensing in generalized gravity theories
• Weak Lensing of the CMB: Extraction of Lensing Information from the Trispectrum
• Impact of Point Source Clustering on Cosmological Parameters with CMB Anisotropies

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• Testing General Relativity with Current Cosmological Data
• Testing General Relativity at Cosmological Scales: Implementation and Parameter Correlations
• Spatial curvature and cosmological tests of general relativity
• A Multi-Parameter Investigation of Gravitational Slip
• Constraints and tensions in testing general relativity from Planck and CFHTLenS including intrinsic alignment systematics
• Constraining Modified Gravity with Euclid
• Figures of merit and constraints from testing General Relativity using the latest cosmological data sets including refined COSMOS 3D weak lensing
• Effects of Dark Energy Perturbations on Cosmological Tests of General Relativity
• CMB Lensing Constraints on Dark Energy and Modified Gravity Scenarios
• Testing model independent modified gravity with future large scale surveys
• Variants of the Dark Left-Right Gauge Model: Neutrinos and Scotinos
• The Effects of Gravitational Slip on the Higher-Order Moments of the Matter Distribution