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hep-th2023
Consistency Condition for Slow-roll and Rapid-turn Inflation
Lilia Anguelova, Calin Iuliu Lazaroiu
We summarize our work on a consistency condition for inflation in two-field cosmological models, in the regime of rapid turn and third-order slow roll. To ensure a sustained inflat…
gr-qc2023
Natural coordinates and horizontal approximations in two-field cosmological models
Calin Iuliu Lazaroiu
We construct natural local coordinate systems on the phase space of two-field cosmological models with orientable target space, which allow for a description of cosmological flows…
gr-qc2023
Natural observables and dynamical approximations in multifield cosmological models
Calin Iuliu Lazaroiu
I give a geometric construction of certain first order natural dynamical observables in multifield cosmological models with arbitrary target space topology and discuss a system of…