3 citations · 3 across the 3 of their papers we have counts for
3 papers
gr-qc2004
Black Hole Entropy and Dilatations
Stefano Viaggiu
Dilatations by means of a constant factor can be seen in a double way: as a simple change of units length or as a conformal mapping of the starting spacetime into a ``stretched'' o…
gr-qc2004★ 3 cited
Vacuum Solutions of Einstein's Equations in Parabolic Coordinates
Stefano Viaggiu
We present a simple method to obtain vacuum solutions of Einstein's equations in parabolic coordinates starting from ones with cylindrical symmetries. Furthermore, a generalization…
gr-qc2003
A technique for generating new solutions of Einstein's equations
Roberto Bergamini, Stefano Viaggiu
We present a simple technique for generating new solutions of Einstein's equations using such function transformations that leave the field equations in the Ernst form. In this con…