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Two-field Cosmological alpha-attractors with Noether Symmetry

<!--HTML-->We study Noether symmetries in two-field cosmological alpha-attractors, investigating the case when the scalar manifold is an elementary hyperbolic surface. This encompasses and generalizes the case of the Poincare disk. We solve the conditions for the existence of a `separated'...

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Autor principal: Anguelova, Lilia
Lenguaje:eng
Publicado: 2019
Materias:
Acceso en línea:http://cds.cern.ch/record/2681344
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author Anguelova, Lilia
author_facet Anguelova, Lilia
author_sort Anguelova, Lilia
collection CERN
description <!--HTML-->We study Noether symmetries in two-field cosmological alpha-attractors, investigating the case when the scalar manifold is an elementary hyperbolic surface. This encompasses and generalizes the case of the Poincare disk. We solve the conditions for the existence of a `separated' Noether symmetry and find the form of the scalar potential compatible with such, for any elementary hyperbolic surface. For this class of symmetries, we find that the alpha-parameter must have a fixed value. Using those Noether symmetries, we also obtain many exact solutions of the equations of motion of these models, which were studied previously with numerical methods.
id cern-2681344
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2019
record_format invenio
spelling cern-26813442022-11-02T22:21:40Zhttp://cds.cern.ch/record/2681344engAnguelova, LiliaTwo-field Cosmological alpha-attractors with Noether SymmetryString Phenomenology 2019Conferences & Workshops<!--HTML-->We study Noether symmetries in two-field cosmological alpha-attractors, investigating the case when the scalar manifold is an elementary hyperbolic surface. This encompasses and generalizes the case of the Poincare disk. We solve the conditions for the existence of a `separated' Noether symmetry and find the form of the scalar potential compatible with such, for any elementary hyperbolic surface. For this class of symmetries, we find that the alpha-parameter must have a fixed value. Using those Noether symmetries, we also obtain many exact solutions of the equations of motion of these models, which were studied previously with numerical methods.oai:cds.cern.ch:26813442019
spellingShingle Conferences & Workshops
Anguelova, Lilia
Two-field Cosmological alpha-attractors with Noether Symmetry
title Two-field Cosmological alpha-attractors with Noether Symmetry
title_full Two-field Cosmological alpha-attractors with Noether Symmetry
title_fullStr Two-field Cosmological alpha-attractors with Noether Symmetry
title_full_unstemmed Two-field Cosmological alpha-attractors with Noether Symmetry
title_short Two-field Cosmological alpha-attractors with Noether Symmetry
title_sort two-field cosmological alpha-attractors with noether symmetry
topic Conferences & Workshops
url http://cds.cern.ch/record/2681344
work_keys_str_mv AT anguelovalilia twofieldcosmologicalalphaattractorswithnoethersymmetry
AT anguelovalilia stringphenomenology2019