Simulating weak lensing on CMB maps

TL;DR

This paper introduces a rapid and precise simulation method for modeling gravitational lensing effects on CMB anisotropies and polarization, aiding in the analysis of large-scale structure impacts.

Contribution

The paper presents a novel, efficient simulation technique for gravitational lensing effects on CMB maps with adjustable accuracy.

Findings

Method is fast and arbitrarily accurate

Demonstrates efficiency and accuracy of the simulation

Shows dependence of results on algorithm parameters

Abstract

We present a fast, arbitrarily accurate method to simulate the effect of gravitational lensing of the Cosmic Microwave Background anisotropies and polarization fields by large scale structures. We demonstrate the efficiency and accuracy of the method and exhibit their dependence on the algorithm parameters.