50 citations · 50 across the 3 of their papers we have counts for
3 papers
gr-qc2000
Variational dynamics in open spacetimes
Jelle P. Boersma
We study the effect of non-vanishing surface terms at spatial infinity on the dynamics of a scalar field in an open FLRW spacetime. Starting from the path-integral formulation of q…
gr-qc1998
On the large-scale structure of the inflationary universe
Jelle Boersma
We study the evolution of quantum fluctuations of a scalar field which is coupled to the geometry, in an exponentially expanding universe. We derive an expression for the spectrum…
gr-qc1997★ 50 cited
Averaging in Cosmology
Jelle Boersma
In this paper we discuss the effect of local inhomogeneities on the global expansion of nearly FLRW universes, in a perturbative setting. We derive a generic linearized averaging o…