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D-Flation
In a recent paper we showed how Starobinsky-like inflation could emerge from dilaton dynamics in brane cosmology scenarios based on string theory, in which our universe is represented as a three-brane and the effective potential acquires a constant term from a density of effectively point-like non-p...
Autores principales: | , , |
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Lenguaje: | eng |
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2014
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1088/1475-7516/2014/11/014 http://cds.cern.ch/record/1706828 |
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author | Ellis, John Mavromatos, Nick E. Nanopoulos, Dimitri V. |
author_facet | Ellis, John Mavromatos, Nick E. Nanopoulos, Dimitri V. |
author_sort | Ellis, John |
collection | CERN |
description | In a recent paper we showed how Starobinsky-like inflation could emerge from dilaton dynamics in brane cosmology scenarios based on string theory, in which our universe is represented as a three-brane and the effective potential acquires a constant term from a density of effectively point-like non-perturbative defects on the brane: "D-particles". Here we explore how quantum fluctuations of the ensemble of D-particles during the inflationary period may modify the effective inflationary potential due to the dilaton. We then discuss two specific ways in which an enhanced ratio of tensor to scalar perturbations may arise: via either a condensate of vector fields with a Born-Infeld action that may be due to such recoil fluctuations, or graviton production in the D-particle vacuum. |
id | cern-1706828 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2014 |
record_format | invenio |
spelling | cern-17068282023-10-04T08:57:51Zdoi:10.1088/1475-7516/2014/11/014http://cds.cern.ch/record/1706828engEllis, JohnMavromatos, Nick E.Nanopoulos, Dimitri V.D-FlationParticle Physics - TheoryIn a recent paper we showed how Starobinsky-like inflation could emerge from dilaton dynamics in brane cosmology scenarios based on string theory, in which our universe is represented as a three-brane and the effective potential acquires a constant term from a density of effectively point-like non-perturbative defects on the brane: "D-particles". Here we explore how quantum fluctuations of the ensemble of D-particles during the inflationary period may modify the effective inflationary potential due to the dilaton. We then discuss two specific ways in which an enhanced ratio of tensor to scalar perturbations may arise: via either a condensate of vector fields with a Born-Infeld action that may be due to such recoil fluctuations, or graviton production in the D-particle vacuum.In a recent paper we showed how Starobinsky-like inflation could emerge from dilaton dynamics in brane cosmology scenarios based on string theory, in which our universe is represented as a three-brane and the effective potential acquires a constant term from a density of effectively point-like non-perturbative defects on the brane: ``D-particles''. Here we explore how quantum fluctuations of the ensemble of D-particles during the inflationary period may modify the effective inflationary potential due to the dilaton. We then discuss two specific ways in which an enhanced ratio of tensor to scalar perturbations may arise: via either a condensate of vector fields with a Born-Infeld action that may be due to such recoil fluctuations, or graviton production in the D-particle vacuum.In a recent paper we showed how Starobinsky-like inflation could emerge from dilaton dynamics in brane cosmology scenarios based on string theory, in which our universe is represented as a three-brane and the effective potential acquires a constant term from a density of effectively point-like non-perturbative defects on the brane: "D-particles". Here we explore how quantum fluctuations of the ensemble of D-particles during the inflationary period may modify the effective inflationary potential due to the dilaton. We then discuss two specific ways in which an enhanced ratio of tensor to scalar perturbations may arise: via either a condensate of vector fields with a Born-Infeld action that may be due to such recoil fluctuations, or graviton production in the D-particle vacuum.arXiv:1406.0487KCL-PH-TH-2014-19LCTS-2014-19CERN-PH-TH-2014-078ACT-6-14KCL-PH-TH-2014-19LCTS-2014-19CERN-PH-TH-2014-078ACT-6-14oai:cds.cern.ch:17068282014-06-02 |
spellingShingle | Particle Physics - Theory Ellis, John Mavromatos, Nick E. Nanopoulos, Dimitri V. D-Flation |
title | D-Flation |
title_full | D-Flation |
title_fullStr | D-Flation |
title_full_unstemmed | D-Flation |
title_short | D-Flation |
title_sort | d-flation |
topic | Particle Physics - Theory |
url | https://dx.doi.org/10.1088/1475-7516/2014/11/014 http://cds.cern.ch/record/1706828 |
work_keys_str_mv | AT ellisjohn dflation AT mavromatosnicke dflation AT nanopoulosdimitriv dflation |