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

Journal Article · Sun Nov 15 00:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.103512· OSTI ID:21308607

Tseng, C -Y; Wise, Mark B ^[1]

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1. California Institute of Technology, Pasadena, California 91125 (United States)

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.

• OSTI ID: 21308607
• Journal Information: Physical Review. D, Particles Fields, Vol. 80, Issue 10; Other Information: DOI: 10.1103/PhysRevD.80.103512; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANISOTROPY
CORRELATIONS
COSMOLOGICAL CONSTANT
DENSITY
DISTURBANCES
ENERGY DENSITY
FLUCTUATIONS
MICROWAVE RADIATION
PERTURBATION THEORY
STRING MODELS