Entangled scalar and tensor fluctuations during inflation
Abstract
We show how the choice of an inflationary state that entangles scalar and tensor fluctuations affects the angular twopoint correlation functions of the T, E, and B modes of the cosmic microwave background. The propagators for a state starting with some general quadratic entanglement are solved exactly, leading to predictions for the primordial scalarscalar, tensortensor, and scalartensor power spectra. These power spectra are expressed in terms of general functions that describe the entangling structure of the initial state relative to the standard BunchDavies vacuum. We illustrate how such a state would modify the angular correlations in the CMB with a simple example where the initial state is a small perturbation away from the BunchDavies state. Because the state breaks some of the rotational symmetries, the angular power spectra no longer need be strictly diagonal.
 Authors:

 Department of Physics, Carnegie Mellon University,5000 Forbes Avenue, Pittsburgh, Pennsylvania (United States)
 Publication Date:
 Sponsoring Org.:
 SCOAP3, CERN, Geneva (Switzerland)
 OSTI Identifier:
 22572195
 Resource Type:
 Journal Article
 Journal Name:
 Journal of Cosmology and Astroparticle Physics
 Additional Journal Information:
 Journal Volume: 2016; Journal Issue: 11; Other Information: PUBLISHERID: JCAP11(2016)059; OAI: oai:repo.scoap3.org:18120; ccby Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 14757516
 Country of Publication:
 United States
 Language:
 English
 Subject:
 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CORRELATION FUNCTIONS; COSMOLOGICAL INFLATION; ENERGY SPECTRA; EXACT SOLUTIONS; FLUCTUATIONS; INFLATIONARY UNIVERSE; PERTURBATION THEORY; PROPAGATOR; QUANTUM ENTANGLEMENT; RELICT RADIATION; SCALARS; TENSORS; UNIVERSE; VACUUM STATES
Citation Formats
Collins, Hael, and Vardanyan, Tereza. Entangled scalar and tensor fluctuations during inflation. United States: N. p., 2016.
Web. doi:10.1088/14757516/2016/11/059.
Collins, Hael, & Vardanyan, Tereza. Entangled scalar and tensor fluctuations during inflation. United States. doi:10.1088/14757516/2016/11/059.
Collins, Hael, and Vardanyan, Tereza. Tue .
"Entangled scalar and tensor fluctuations during inflation". United States. doi:10.1088/14757516/2016/11/059.
@article{osti_22572195,
title = {Entangled scalar and tensor fluctuations during inflation},
author = {Collins, Hael and Vardanyan, Tereza},
abstractNote = {We show how the choice of an inflationary state that entangles scalar and tensor fluctuations affects the angular twopoint correlation functions of the T, E, and B modes of the cosmic microwave background. The propagators for a state starting with some general quadratic entanglement are solved exactly, leading to predictions for the primordial scalarscalar, tensortensor, and scalartensor power spectra. These power spectra are expressed in terms of general functions that describe the entangling structure of the initial state relative to the standard BunchDavies vacuum. We illustrate how such a state would modify the angular correlations in the CMB with a simple example where the initial state is a small perturbation away from the BunchDavies state. Because the state breaks some of the rotational symmetries, the angular power spectra no longer need be strictly diagonal.},
doi = {10.1088/14757516/2016/11/059},
journal = {Journal of Cosmology and Astroparticle Physics},
issn = {14757516},
number = 11,
volume = 2016,
place = {United States},
year = {2016},
month = {11}
}