skip to main content

SciTech ConnectSciTech Connect

Title: Non-Bunch-Davies statistical anisotropies

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.
Authors:
 [1] ;  [2]
  1. Department of Physics, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, TX, 75083 (United States)
  2. Centre for Theoretical Cosmology, DAMTP, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA (United Kingdom)
Publication Date:
OSTI Identifier:
22373485
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 07; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANISOTROPY; COSMOLOGICAL INFLATION; DENSITY; FLUCTUATIONS; QUANTUM STATES; UNIVERSE; VECTOR FIELDS