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arxiv: 1801.03356 · v1 · pith:SBM7BXYNnew · submitted 2018-01-10 · ✦ hep-th

Two-field cosmological models and the uniformization theorem

classification ✦ hep-th
keywords modelscosmologicalhyperbolictwo-fielduniformizationalphaattractorcase
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We propose a class of two-field cosmological models derived from gravity coupled to non-linear sigma models whose target space is a non-compact and geometrically-finite hyperbolic surface, which provide a wide generalization of so-called $\alpha$-attractor models and can be studied using uniformization theory. We illustrate cosmological dynamics in such models for the case of the hyperbolic triply-punctured sphere.

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