Twofield analysis of noscale supergravity inflation
Abstract
Since the buildingblocks of supersymmetric models include chiral superfields containing pairs of effective scalar fields, a twofield approach is particularly appropriate for models of inflation based on supergravity. In this paper, we generalize the twofield analysis of the inflationary power spectrum to supergravity models with arbitrary Kähler potential. We show how twofield effects in the context of noscale supergravity can alter the model predictions for the scalar spectral index n{sub s} and the tensortoscalar ratio r, yielding results that interpolate between the Planckfriendly Starobinsky model and BICEP2friendly predictions. In particular, we show that twofield effects in a chaotic noscale inflation model with a quadratic potential are capable of reducing r to very small values  0.1. We also calculate the nonGaussianity measure f{sub NL}, finding that is well below the current experimental sensitivity.
 Authors:
 Theoretical Particle Physics and Cosmology Group, Department of Physics, King's College London, WC2R 2LS London (United Kingdom)
 William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, MN 55455 (United States)
 George P. and Cynthia W. Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, College Station, 77843 Texas (United States)
 Publication Date:
 OSTI Identifier:
 22382037
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 01; 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; CHAOS THEORY; CHIRALITY; COSMOLOGICAL INFLATION; FORECASTING; POTENTIALS; SCALAR FIELDS; SCALARS; SENSITIVITY; SPECTRA; SUPERGRAVITY; SUPERSYMMETRY; TENSORS
Citation Formats
Ellis, John, García, Marcos A.G., Olive, Keith A., and Nanopoulos, Dimitri V., Email: john.ellis@cern.ch, Email: garciagarcia@physics.umn.edu, Email: dimitri@physics.tamu.edu, Email: olive@physics.umn.edu. Twofield analysis of noscale supergravity inflation. United States: N. p., 2015.
Web. doi:10.1088/14757516/2015/01/010.
Ellis, John, García, Marcos A.G., Olive, Keith A., & Nanopoulos, Dimitri V., Email: john.ellis@cern.ch, Email: garciagarcia@physics.umn.edu, Email: dimitri@physics.tamu.edu, Email: olive@physics.umn.edu. Twofield analysis of noscale supergravity inflation. United States. doi:10.1088/14757516/2015/01/010.
Ellis, John, García, Marcos A.G., Olive, Keith A., and Nanopoulos, Dimitri V., Email: john.ellis@cern.ch, Email: garciagarcia@physics.umn.edu, Email: dimitri@physics.tamu.edu, Email: olive@physics.umn.edu. 2015.
"Twofield analysis of noscale supergravity inflation". United States.
doi:10.1088/14757516/2015/01/010.
@article{osti_22382037,
title = {Twofield analysis of noscale supergravity inflation},
author = {Ellis, John and García, Marcos A.G. and Olive, Keith A. and Nanopoulos, Dimitri V., Email: john.ellis@cern.ch, Email: garciagarcia@physics.umn.edu, Email: dimitri@physics.tamu.edu, Email: olive@physics.umn.edu},
abstractNote = {Since the buildingblocks of supersymmetric models include chiral superfields containing pairs of effective scalar fields, a twofield approach is particularly appropriate for models of inflation based on supergravity. In this paper, we generalize the twofield analysis of the inflationary power spectrum to supergravity models with arbitrary Kähler potential. We show how twofield effects in the context of noscale supergravity can alter the model predictions for the scalar spectral index n{sub s} and the tensortoscalar ratio r, yielding results that interpolate between the Planckfriendly Starobinsky model and BICEP2friendly predictions. In particular, we show that twofield effects in a chaotic noscale inflation model with a quadratic potential are capable of reducing r to very small values  0.1. We also calculate the nonGaussianity measure f{sub NL}, finding that is well below the current experimental sensitivity.},
doi = {10.1088/14757516/2015/01/010},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 01,
volume = 2015,
place = {United States},
year = 2015,
month = 1
}

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