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Title: Sharp predictions from eternal inflation patches in D-brane inflation

Abstract

We numerically generate the six-dimensional landscape of D3-brane inflation and identify patches of eternal inflation near sufficiently flat inflection points of the potential. We show that reasonable measures that select patches of eternal inflation in the landscape yield sharp predictions for the spectral properties of primordial perturbations on observable scales. These include a scalar tilt of .936, a running of the scalar tilt −.00103, undetectably small tensors and non-Gaussianity, and no observable spatial curvature. Our results explicitly demonstrate that precision cosmology probes the combination of the statistical properties of the string landscape and the measure implied by the universe's quantum state.

Authors:
 [1];  [2]
  1. Institute for Theoretical Physics, Katholieke Universiteit Leuven, Celestijnenlaan 200D, Leuven, 3001 Belgium (Belgium)
  2. Center for Cosmology and Particle Physics, New York University, 726 Broadway, New York, 10003 (United States)
Publication Date:
OSTI Identifier:
22679931
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2017; Journal Issue: 04; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCURACY; COSMOLOGY; D-BRANES; DISTURBANCES; FORECASTING; INFLATIONARY UNIVERSE; PERTURBATION THEORY; QUANTUM STATES; UNIVERSE

Citation Formats

Hertog, Thomas, and Janssen, Oliver, E-mail: thomas.hertog@fys.kuleuven.be, E-mail: opj202@nyu.edu. Sharp predictions from eternal inflation patches in D-brane inflation. United States: N. p., 2017. Web. doi:10.1088/1475-7516/2017/04/011.
Hertog, Thomas, & Janssen, Oliver, E-mail: thomas.hertog@fys.kuleuven.be, E-mail: opj202@nyu.edu. Sharp predictions from eternal inflation patches in D-brane inflation. United States. doi:10.1088/1475-7516/2017/04/011.
Hertog, Thomas, and Janssen, Oliver, E-mail: thomas.hertog@fys.kuleuven.be, E-mail: opj202@nyu.edu. Sat . "Sharp predictions from eternal inflation patches in D-brane inflation". United States. doi:10.1088/1475-7516/2017/04/011.
@article{osti_22679931,
title = {Sharp predictions from eternal inflation patches in D-brane inflation},
author = {Hertog, Thomas and Janssen, Oliver, E-mail: thomas.hertog@fys.kuleuven.be, E-mail: opj202@nyu.edu},
abstractNote = {We numerically generate the six-dimensional landscape of D3-brane inflation and identify patches of eternal inflation near sufficiently flat inflection points of the potential. We show that reasonable measures that select patches of eternal inflation in the landscape yield sharp predictions for the spectral properties of primordial perturbations on observable scales. These include a scalar tilt of .936, a running of the scalar tilt −.00103, undetectably small tensors and non-Gaussianity, and no observable spatial curvature. Our results explicitly demonstrate that precision cosmology probes the combination of the statistical properties of the string landscape and the measure implied by the universe's quantum state.},
doi = {10.1088/1475-7516/2017/04/011},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 04,
volume = 2017,
place = {United States},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}