Inflaton Two-Point Correlation in the Presence of a Cosmic String

Details Inflaton Two-Point Correlation in the Presence of a Cosmic String Inflaton Two-Point Correlation in the Presence of a Cosmic String

2009-08-04

arxiv.org/abs/0908.0543v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

7 pages; references added

Scientific paper

Precise measurements of the microwave background anisotropy have confirmed the inflationary picture of approximately scale invariant, Gaussian primordial adiabatic density perturbations. However, there are some anomalies that suggest a small violation of rotational and/or translational invariance in the mechanism that generates the primordial density fluctuations. Motivated by this we study the two point correlation of a massless scalar (the inflaton) when the stress tensor contains the energy density from an infinitely long straight cosmic string in addition to a cosmological constant.

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