University of Cambridge > Talks.cam > DAMTP Friday GR Seminar > CMB anomalies as probes for the initial condition of inflation

CMB anomalies as probes for the initial condition of inflation

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We introduce a generic mechanism that can extend the effects of relic anisotropies at the beginning of inflation to relatively much shorter scales in density perturbations. This is induced by non-Bunch-Davies states of the quantum fluctuations, and can show up in the non-oscillatory components of the density perturbations. This mechanism works for general forms of anisotropies, and, to illustrate it, we use an example of relic vector field. The detailed scale-dependence of these anisotropies can be used to probe the initial quantum state of our universe.

This talk is part of the DAMTP Friday GR Seminar series.

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