Non-Bunch-Davies Anisotropy

Abstract

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.

10 pages

References in corpus (4)

• Observational Signatures and Non-Gaussianities of General Single Field Inflation
• Primordial Non-Gaussianities from Inflation Models
• The Uncorrelated Universe: Statistical Anisotropy and the Vanishing Angular Correlation Function in WMAP Years 1-3
• Enhanced Non-Gaussianity from Excited Initial States

Cited by in corpus (8)

• Anisotropic Inflation with the non-Vacuum Initial State
• Pre-inflation and Trans-Planckian Censorship
• Anisotropic non-Gaussianity from Rotational Symmetry Breaking Excited Initial States
• On the initial condition of inflationary fluctuations
• The Initial State of a Primordial Anisotropic Stage of Inflation
• CMB statistical anisotropies of classical and quantum origins
• Cosmological consequences of statistical inhomogeneity
• Relic Vector Field and CMB Large Scale Anomalies