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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...

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Detalles Bibliográficos
Autores principales: Ellis, John, Mavromatos, Nick E., Nanopoulos, Dimitri V.
Lenguaje:eng
Publicado: 2014
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.
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institution Organización Europea para la Investigación Nuclear
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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