Two-field cosmological models and the uniformization theorem
arXiv: High Energy Physics - Theory(2018)
摘要
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 α-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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关键词
Non-linear sigma models, Cosmology, Inflation, Hyperbolic geometry
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