Work

CMB angular power spectrum from correlated primordial fluctuation

Year: 2009

Type: article

Abstract: The usual inflationary scenario predicts a Gaussian random primordial density fluctuation, different Fourier modes of which do not correlate with each other. In this paper we propose a correlation between these different modes. A simple case is that these different Fourier modes correlate with each other following a Gaussian function. For such a primordial density fluctuation we calculate the cosmic microwave background angular power spectrum and find that its amplitude decreases but the decrease is different for different $l$. This feature can be used to constrain the correlation strength from the real data.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.79.043015

Authors: B. Yu, T. Lu

Institution: Nanjing University

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W1997116756

FWCI:

Cites: 21

Cited by: 6

Related to: 10