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Talk
Title	Two-field Cosmological alpha-attractors with Noether Symmetry
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Author(s)	Anguelova, Lilia (speaker) (Utrecht University)
Corporate author(s)	CERN. Geneva
Imprint	2019-06-25. - 0:14:02.
Series	(Conferences & Workshops) (String Phenomenology 2019)
Lecture note	on 2019-06-25T15:00:00
Subject category	Conferences & Workshops
Abstract	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.
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Submitted by	elena.gianolio@cern.ch