CMB Power Spectrum from Noncommutative Spacetime

TL;DR

This paper demonstrates that a noncommutative spacetime inflation model can successfully explain recent WMAP CMB data, establishing a link between the noncommutative parameter and inflation's end time.

Contribution

It introduces a noncommutative spacetime inflation model that fits new CMB data and relates the noncommutative parameter to the inflationary timeline.

Findings

The model fits WMAP data well.

A relationship between string scale and inflation end time is derived.

Supports noncommutative spacetime as a viable inflation framework.

Abstract

Very recent CMB data of WMAP offers an opportunity to test inflation models, in particular, the running of spectral index is quite new and can be used to rule out some models. We show that an noncommutative spacetime inflation model gives a good explanation of these new results. In fitting the data, we also obtain a relationship between the noncommutative parameter (string scale) and the ending time of inflation.