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Fast and Exact Spin-S Spherical Harmonic Transforms by mohammed ezzat is a document available to read on EtoBox.
This document presents a fast and exact algorithm for spin-s spherical harmonic transforms, allowing simultaneous computation of multiple distinct spin transforms with a computational scaling of O(L3). The method utilizes Wigner d-matrices evaluated at π/2, improving efficiency and numerical stability compared to previous approaches. Applications include analysis of the Cosmic Microwave Background and gravitational lensing, with a publicly available implementation demonstrating high accuracy and modest comp
- Author
- mohammed ezzat
- Language
- EN