57 citations · 104 across the 2 of their papers we have counts for
2 papers
gr-qc2001★ 57 cited
New exact solutions for power-law inflation Friedmann models
H. -J. Schmidt
We consider the spatially flat Friedmann model. For a(t) = t^p, especially, if p is larger or equal to 1, this is called power-law inflation. For the Lagrangian L = R^m with p = -…
gr-qc2001★ 47 cited
Comparing selfinteracting scalar fields and R + R^3 cosmological models
H. -J. Schmidt
We generalize the well-known analogies between m^2 ϕ^2 and R + R^2 theories to include the selfinteraction λϕ^4-term for the scalar field. It turns out to be the R + R^3 Lagrangian…