43 citations · 80 across the 5 of their papers we have counts for
Showing 2001Show all
2 papers · 1 filter
gr-qc2001★ 9 cited
A decoupled system of hyperbolic equations for linearized cosmological perturbations
J. Ramirez, S. Kopeikin
A decoupled system of hyperbolic partial differential equations for linear perturbations around any spatially flat FRW universe is obtained for a wide class of perturbations. The c…
gr-qc2001★ 17 cited
Cosmological perturbations: a new gauge-invariant approach
Sergei M. Kopeikin, Juan Ramirez, Bahram Mashhoon +1
A new gauge-invariant approach for describing cosmological perturbations is developed. It is based on a physically motivated splitting of the stress-energy tensor of the perturbati…