12 citations · 60 across the 17 of their papers we have counts for
Showing 2000Show all
2 papers · 1 filter
gr-qc2000★ 7 cited
Acoustics of early universe. II. Lifshitz vs. gauge-invariant theories
Zdzislaw A. Golda, Andrzej Woszczyna
Appealing to classical methods of order reduction, we reduce the Lifshitz system to a second order differential equation. We demonstrate its equivalence to well known gauge-invaria…
gr-qc2000★ 3 cited
Acoustics of early universe. I. Flat versus open universe models
Zdzislaw A. Golda, Andrzej Woszczyna
A simple perturbation description unique for all signs of curvature, and based on the gauge-invariant formalisms is proposed to demonstrate that: (1) The density perturbations prop…