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Higher-Order Gravitational Lensing Reconstruction using Feynman Diagrams
Elizabeth E. Jenkins, Aneesh V. Manohar, Wouter J. Waalewijn +1
We develop a method for calculating the correlation structure of the Cosmic Microwave Background (CMB) using Feynman diagrams, when the CMB has been modified by gravitational lensi…
Gravitational Lensing of the CMB: a Feynman Diagram Approach
Elizabeth E. Jenkins, Aneesh V. Manohar, Wouter J. Waalewijn +1
We develop a Feynman diagram approach to calculating correlations of the Cosmic Microwave Background (CMB) in the presence of distortions. As one application, we focus on CMB disto…
The Topology and Size of the Universe from CMB Temperature and Polarization Data
Grigor Aslanyan, Aneesh V. Manohar, Amit P. S. Yadav
We analyze seven year and nine year WMAP temperature maps for signatures of three finite flat topologies M_0=T^3, M_1=T^2 x R^1, and M_2=S^1 x R^2. We use Monte-Carlo simulations w…
Limits on Semiclassical Fluctuations in the Primordial Universe
Grigor Aslanyan, Aneesh V. Manohar, Amit P. S. Yadav
We place limits on semiclassical fluctuations that might be present in the primordial perturbation spectrum. These can arise if some signatures of pre-inflationary features survive…
Measuring gravitational lensing of the cosmic microwave background using cross correlation with large scale structure
Chang Feng, Grigor Aslanyan, Aneesh V. Manohar +3
We cross correlate the gravitational lensing map extracted from cosmic microwave background measurements by the Wilkinson Microwave Anisotropy Probe (WMAP) with the radio galaxy di…
The Topology and Size of the Universe from the Cosmic Microwave Background
Grigor Aslanyan, Aneesh V. Manohar
We study the possibility that the universe has compact topologies T^3, T^2 x R^1, or S^1 x R^2 using the seven-year WMAP data. The maximum likelihood 95% confidence intervals for t…