13 citations · 23 across the 4 of their papers we have counts for
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gr-qc2008★ 8 cited
Probing the creatable character of perturbed Friedmann-Robertson-Walker universes
Ramon Lapiedra, Diego Sáez
We discuss whether some perturbed Friedmann-Robertson-Walker (FRW) universes could be creatable, i. e., could have vanishing energy, linear momentum and angular momentum, as it cou…
gr-qc2007★ 13 cited
Creatable Universes
Joan Josep Ferrando, Ramon Lapiedra, Juan Antonio Morales
We consider the question of properly defining energy and momenta for non asymptotic Minkowskian spaces in general relativity. Only spaces of this type, whose energy, linear 3-momen…