August 28, 2022 to September 1, 2022
Serbian Academy of Sciences and Arts – SASA
Europe/Belgrade timezone

Hidden Symmetries, Rapid Turns and Cosmic Acceleration

S03-GC-101
Aug 30, 2022, 5:45 PM
15m
Hall 661 (Faculty of Physics)

Hall 661

Faculty of Physics

Board: S03-GC-101
Oral presentation S03 Gravitation and Cosmology S03 Gravitation and Cosmology

Speaker

Lilia Anguelova (INRNE, Bulgarian Academy of Sciences)

Description

Hidden symmetries provide a powerful tool for finding exact solutions in multifield cosmological models. I will show how, using such symmetries, one can find inflationary solutions in two-field models, which lead to the generation of primordial black holes. I will 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.

Primary author

Lilia Anguelova (INRNE, Bulgarian Academy of Sciences)

Presentation materials