Cosmic Microwave Background Anisotropies from Scaling Seeds: Generic Properties of the Correlation Functions

TL;DR

This paper introduces a new analytical approach to study cosmic microwave background anisotropies caused by causal scaling seed perturbations, emphasizing their potential importance despite skepticism about related models.

Contribution

It presents a partially new method to analyze fluctuations from causal scaling seeds, identifying five key functions that determine their power spectra.

Findings

Power spectra are governed by five analytic functions.

Numerical determination of these functions for a specific example.

Advocates for further analysis of causal scaling seed perturbations.

Abstract

In this work we present a partially new method to analyze fluctuations which are induced by causal scaling seeds. We show that the power spectra due to this kind of seed perturbations are determined by five analytic functions, which we determine numerically for a special example. We put forward the view that, even if recent work disfavors the models with cosmic strings and global O(4) texture, causal scaling seed perturbations merit a more thorough and general analysis, which we initiate in this paper.