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Inflaton two-point correlation in the presence of a cosmic string

Tseng, Chien-Yao and Wise, Mark B. (2009) Inflaton two-point correlation in the presence of a cosmic string. Physical Review D, 80 (10). Art. no. 103512 . ISSN 2470-0010.

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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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Additional Information:© 2009 The American Physical Society. Received 8 September 2009; published 13 November 2009. We thank S. Carroll for discussions particularly during the early stages of this work. We are grateful for the Department of Energy for partial support under Grant No. DE-FG03-92ER40701.
Funding AgencyGrant Number
Department of EnergyDE-FG03-92ER40701
Issue or Number:10
Classification Code:PACS: 98.80.Cq
Record Number:CaltechAUTHORS:20100105-101518370
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:17058
Deposited By: Tony Diaz
Deposited On:05 Jan 2010 23:08
Last Modified:03 Oct 2019 01:21

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