PoS - Proceedings of Science
Volume 427 - 11th International Conference of the Balkan Physical Union (BPU11) - S03-GC Gravitation and Cosmology
Hidden Symmetries, Rapid Turns and Cosmic Acceleration
L. Anguelova
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Published on: October 02, 2023
Abstract
Hidden symmetries provide a powerful tool for finding exact solutions in multifield cosmological models. We review how, using such symmetries, one can find inflationary solutions in two-field models, which lead to the generation of primordial black holes. We also discuss an exact solution in a two-field cosmological model, which describes dark energy. This solution is obtained with the use of a hidden symmetry, although the latter is broken by a constant term in the scalar potential. All of the above solutions are characterized by field-space trajectories with rapid turns.
DOI: https://doi.org/10.22323/1.427.0049
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