# On primordial black holes from rapid turns in two-field models

@article{Anguelova2021OnPB, title={On primordial black holes from rapid turns in two-field models}, author={Lilia Anguelova}, journal={Journal of Cosmology and Astroparticle Physics}, year={2021}, volume={2021} }

We study rapid-turn trajectories in a class of two-field cosmological models, whose scalar manifold is the Poincaré disk. Background solutions in multi-field inflation, with field-space trajectories exhibiting sharp turns, can seed primordial black hole (PBH) formation. We investigate a class of exact solutions with hidden symmetry and show that they exhibit the kind of transient rapid-turn period, needed to induce PBH generation. Furthermore, we relax the symmetry condition and find, in a…

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