English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We study the infrared scale expansion of single field cosmological modelsusing the Hamilton-Jacobi formalism, showing that its specialization at unitscale parameter recovers the slow roll expansion. In particular, we show thatthe latter coincides with a Laurent expansion of the Hamilton-Jacobi functionin powers of the Planck mass, whose terms are controlled by certainrecursively-defined polynomials. This allows us to give an explicit recursionprocedure for constructing all higher order terms of the slow roll expansion.We also discuss the corresponding effective potential and the action of theuniversal similarity group.

On the slow roll expansion of one-field cosmological models