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Calin Iuliu Lazaroiu
기하학 수리물리 연구단
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Two-field cosmological α-attractors with Noether symmetry

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Title
Two-field cosmological α-attractors with Noether symmetry
Author(s)
Lilia Anguelova; Elena Mirela Babalic; Calin Iuliu Lazaroiu
Publication Date
2019-04
Journal
JOURNAL OF HIGH ENERGY PHYSICS, v., no.4, pp.148 -
Publisher
SPRINGER
Abstract
© 2019, The Author(s). We study Noether symmetries in two-field cosmological α-attractors, investigating the case when the scalar manifold is an elementary hyperbolic surface. This encompasses and generalizes the case of the Poincaré 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 α-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
URI
https://pr.ibs.re.kr/handle/8788114/6932
ISSN
1029-8479
Appears in Collections:
Center for Geometry and Physics(기하학 수리물리 연구단) > Journal Papers (저널논문)
Files in This Item:
2019_CL_Two-field cosmological α-attractors with Noether Symmetry.pdfDownload

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