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Stringy Origins of Cosmic Structure: The D-brane vector curvaton

Wills, D (University of Durham)
Tuesday 26 June 2012, 16:45-17:00

Seminar Room 1, Newton Institute


I will discuss how the U(1) vector fields that live on the worldvolumes of D-branes in Type IIB string theory may play the role of vector curvatons and hence give rise to distinctive features in the spectrum and bispectrum of the curvature perturbation. I will first consider vector fields on D3-branes in open-string inflation, as a means of illustrating the principle. I will then discuss a D7-brane vector curvaton scenario in closed-string inflation.


[pdf ]

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