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/

Zendy Plus

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

Zendy Tools

Zendy Open

The nature of the scalar field responsible for the cosmological inflation,the \qo{inflaton}, is found to be rooted in the most fundamental concept of theWeyl's differential geometry: the parallel displacement of vectors in curvedspace-time. The Euler-Lagrange theory based on a scalar-tensor Weyl-DiracLagrangian leads straightforwardly to the Einstein equation admitting as asource the characteristic energy-momentum tensor of the inflaton field. Withinthe dynamics of the inflation, e.g. in the slow roll transition from a\qo{false} toward a \qo{true vacuum}, the inflaton's geometry implies atemperature driven symmetry change between a highly symmetrical \qo{Weylan} toa low symmetry \qo{Riemannian} scenario. Since the dynamics of the Weylcurvature scalar, constructed over differentials of the inflaton field, hasbeen found to account for the quantum phenomenology at the microscopic scale,the present work suggests interesting connections between the \qo{micro} andthe \qo{macro} aspects of our Universe.

The geometrical nature of the cosmological inflation in the framework of the Weyl-Dirac conformal gravity theory