Hybrid Inflation in Supergravity with $(SU(1,1)/U(1))^{m}$ Kähler Manifolds

In the presence of fields without superpotential but with large vevs through D-terms the mass-squared of the inflaton in the context of supergravity hybrid inflation receives positive contributions which could cancel the possibly negative K{ä}hler potential ones. The mechanism is demonstrated using...

Descripción completa

Detalles Bibliográficos
Autor principal: Panagiotakopoulos, C.
Lenguaje:eng
Publicado: 1999
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(99)00688-7
http://cds.cern.ch/record/384449
_version_ 1780893542281904128
author Panagiotakopoulos, C.
author_facet Panagiotakopoulos, C.
author_sort Panagiotakopoulos, C.
collection CERN
description In the presence of fields without superpotential but with large vevs through D-terms the mass-squared of the inflaton in the context of supergravity hybrid inflation receives positive contributions which could cancel the possibly negative K{ä}hler potential ones. The mechanism is demonstrated using K{ä}hler potentials associated with products of $SU(1,1)/U(1)$ K{ä}hler manifolds. In a particularly simple model of this type all supergravity corrections to the F-term potential turn out to be proportional to the inflaton mass allowing for an essentially completely flat inflationary potential above the Planck scale. The model also allows for a detectable gravitational wave contribution to the microwave background anisotropy.
id cern-384449
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1999
record_format invenio
spelling cern-3844492023-10-04T06:00:54Zdoi:10.1016/S0370-2693(99)00688-7http://cds.cern.ch/record/384449engPanagiotakopoulos, C.Hybrid Inflation in Supergravity with $(SU(1,1)/U(1))^{m}$ Kähler ManifoldsParticle Physics - PhenomenologyIn the presence of fields without superpotential but with large vevs through D-terms the mass-squared of the inflaton in the context of supergravity hybrid inflation receives positive contributions which could cancel the possibly negative K{ä}hler potential ones. The mechanism is demonstrated using K{ä}hler potentials associated with products of $SU(1,1)/U(1)$ K{ä}hler manifolds. In a particularly simple model of this type all supergravity corrections to the F-term potential turn out to be proportional to the inflaton mass allowing for an essentially completely flat inflationary potential above the Planck scale. The model also allows for a detectable gravitational wave contribution to the microwave background anisotropy.In the presence of fields without superpotential but with large vevs through D-terms the mass-squared of the inflaton in the context of supergravity hybrid inflation receives positive contributions which could cancel the possibly negative K$\ddot{a}$hler potential ones. The mechanism is demonstrated using K$\ddot{a}$hler potentials associated with products of $SU(1,1)/U(1)$ K$\ddot{a}$hler manifolds. In a particularly simple model of this type all supergravity corrections to the F-term potential turn out to be proportional to the inflaton mass allowing even for an essentially completely flat inflationary potential. The model also allows for a detectable gravitational wave contribution to the microwave background anisotropy. Its initial conditions are quite natural largely due to a built in mechanism for a first stage of ``chaotic'' D-term inflation.In the presence of fields without superpotential but with large vevs through D-terms the mass-squared of the inflaton in the context of supergravity hybrid inflation receives positive contributions which could cancel the possibly negative K$\ddot{a}$hler potential ones. The mechanism is demonstrated using K$\ddot{a}$hler potentials associated with products of $SU(1,1)/U(1)$ K$\ddot{a}$hler manifolds. In a particularly simple model of this type all supergravity corrections to the F-term potential turn out to be proportional to the inflaton mass allowing even for an essentially completely flat inflationary potential. The model also allows for a detectable gravitational wave contribution to the microwave background anisotropy. Its initial conditions are quite natural largely due to a built in mechanism for a first stage of ``chaotic'' D-term inflation.In the presence of fields without superpotential but with large vevs through D-terms the mass-squared of the inflaton in the context of supergravity hybrid inflation receives positive contributions which could cancel the possibly negative Kähler potential ones. The mechanism is demonstrated using Kähler potentials associated with products of SU (1,1)/ U (1) Kähler manifolds. In a particularly simple model of this type all supergravity corrections to the F-term potential turn out to be proportional to the inflaton mass allowing even for an essentially completely flat inflationary potential. The model also allows for a detectable gravitational wave contribution to the microwave background anisotropy. Its initial conditions are quite natural largely due to a built in mechanism for a first stage of “chaotic” D-term inflation.hep-ph/9904284oai:cds.cern.ch:3844491999
spellingShingle Particle Physics - Phenomenology
Panagiotakopoulos, C.
Hybrid Inflation in Supergravity with $(SU(1,1)/U(1))^{m}$ Kähler Manifolds
title Hybrid Inflation in Supergravity with $(SU(1,1)/U(1))^{m}$ Kähler Manifolds
title_full Hybrid Inflation in Supergravity with $(SU(1,1)/U(1))^{m}$ Kähler Manifolds
title_fullStr Hybrid Inflation in Supergravity with $(SU(1,1)/U(1))^{m}$ Kähler Manifolds
title_full_unstemmed Hybrid Inflation in Supergravity with $(SU(1,1)/U(1))^{m}$ Kähler Manifolds
title_short Hybrid Inflation in Supergravity with $(SU(1,1)/U(1))^{m}$ Kähler Manifolds
title_sort hybrid inflation in supergravity with $(su(1,1)/u(1))^{m}$ kähler manifolds
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(99)00688-7
http://cds.cern.ch/record/384449
work_keys_str_mv AT panagiotakopoulosc hybridinflationinsupergravitywithsu11u1mkahlermanifolds

Ejemplares similares