Nonlinear curvature Lagrangians and extended inflation in the early universe

Details Nonlinear curvature Lagrangians and extended inflation in the early universe Nonlinear curvature Lagrangians and extended inflation in the early universe

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.194..239s&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 194, no. 2, p. 239-244.

Astronomy and Astrophysics

Astrophysics

1

Big Bang Cosmology, Gravitational Fields, Lagrangian Equilibrium Points, Universe, Gravitational Constant, Relativity

Scientific paper

A scenario is developed that permits the assumption of extended inflation in the early universe without introducing scalar fields. Transformations are proposed that can be used to derive Lagrangians that solely involve a nonlinear function of the curvature scalar. The transformations can be used to give the nonlinear function in a form that is similar to the Brans-Dicke model and suitable to the scenario of extended inflation.

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