Cosmology with Curvature-Saturated Gravitational Lagrangian R/\sqrt{1 + l^4 R^2}

Hagen Kleinert, Hans-Jürgen Schmidt

We argue that the Lagrangian for gravity should remain bounded at large curvature, and interpolate between the weak-field tested Einstein-Hilbert Lagrangian L_EH = R /16 pi G and a…