Phys. Rev. D 80, 103512 (2009) [6 pages]Inflaton two-point correlation in the presence of a cosmic stringReceived 8 September 2009; published 13 November 2009 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. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.80.103512
DOI:
10.1103/PhysRevD.80.103512
PACS:
98.80.Cq
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.