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Paper detail

Analytic solution and Noether symmetries for the hyperbolic inflationary model in the Jordan frame

The Noether symmetry analysis is applied for the study of a multifield cosmological model in a spatially flat FLRW background geometry. The gravitational Action Integral consists of two scalar fields, the Brans-Dicke field and a second scalar field minimally coupled to gravity. However, the two scalar fields interact in the kinetic terms. This multifield has been found to describe the equivalent of hyperbolic inflation in the Jordan frame. The application of Noether's theorems constrain the free parameters of the model that conservation laws exist. We find that the field equations form an integrable dynamical system and the analytic solution is derived.

preprint2022arXivOpen access
Andronikos Paliathanasis
math-phmath.MPgr-qc
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Andronikos Paliathanasis

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