145 citations · 2.2k across the 67 of their papers we have counts for
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Simple expressions for second order density perturbations in standard cosmology
Claes Uggla, John Wainwright
In this paper we present four simple expressions for the relativistic first and second order fractional density perturbations for CDM cosmologies in different gauges: the Poisso…
Global cosmological dynamics for the scalar field representation of the modified Chaplygin gas
Claes Uggla
In this paper we investigate the global dynamics for the minimally coupled scalar field representation of the modified Chaplygin gas in the context of flat FLRW cosmology. The tool…
Spacetime Singularities: Recent Developments
Claes Uggla
Recent developments concerning oscillatory spacelike singularities in general relativity are taking place on two fronts. The first treats generic singularities in spatially homogen…
Recent developments concerning generic spacelike singularities
Claes Uggla
This is a review of recent progress concerning generic spacelike singularities in general relativity. For brevity the main focus is on singularities in vacuum spacetimes, although…
Asymptotic analysis of perturbed dust cosmologies to second order
Claes Uggla, John Wainwright
Nonlinear perturbations of Friedmann-Lemaitre cosmologies with dust and a positive cosmological constant have recently attracted considerable attention. In this paper our first goa…