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Title: Running non-Gaussianities in Dirac-Born-Infeld inflation

Abstract

We study the non-Gaussianity in the simplest infrared model of the Dirac-Born-Infeld (DBI) inflation. We show that the non-Gaussianity in such a model is compatible with the current observational bound and is within the sensitivity of future experiments. We also discuss the scale dependence of the non-Gaussianity. In DBI inflation, such a feature can be used as a probe to the properties of the background geometry of the extra dimensions or internal space.

Authors:
 [1]
  1. Institute for Fundamental Theory, Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)
Publication Date:
OSTI Identifier:
20774516
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 72; Journal Issue: 12; Other Information: DOI: 10.1103/PhysRevD.72.123518; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BORN-INFELD THEORY; COSMOLOGY; GEOMETRY; GRAVITATION; INFLATIONARY UNIVERSE; SENSITIVITY

Citation Formats

Chen Xingang. Running non-Gaussianities in Dirac-Born-Infeld inflation. United States: N. p., 2005. Web. doi:10.1103/PhysRevD.72.123518.
Chen Xingang. Running non-Gaussianities in Dirac-Born-Infeld inflation. United States. doi:10.1103/PhysRevD.72.123518.
Chen Xingang. Thu . "Running non-Gaussianities in Dirac-Born-Infeld inflation". United States. doi:10.1103/PhysRevD.72.123518.
@article{osti_20774516,
title = {Running non-Gaussianities in Dirac-Born-Infeld inflation},
author = {Chen Xingang},
abstractNote = {We study the non-Gaussianity in the simplest infrared model of the Dirac-Born-Infeld (DBI) inflation. We show that the non-Gaussianity in such a model is compatible with the current observational bound and is within the sensitivity of future experiments. We also discuss the scale dependence of the non-Gaussianity. In DBI inflation, such a feature can be used as a probe to the properties of the background geometry of the extra dimensions or internal space.},
doi = {10.1103/PhysRevD.72.123518},
journal = {Physical Review. D, Particles Fields},
number = 12,
volume = 72,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}