49 citations · 226 across the 20 of their papers we have counts for
5 papers · 1 filter
Real Hamiltonian forms of Hamiltonian systems
V. S. Gerdjikov, A. Kyuldjiev, G. Marmo +1
We introduce the notion of a real form of a Hamiltonian dynamical system in analogy with the notion of real forms for simple Lie algebras. This is done by restricting the complexif…
Trace anomaly and black holes evaporation
F. Canfora, G. Vilasi
A model is proposed to describe a transition from a Schwarzschild black hole of mass to a Schwarzschild black hole of mass . The basic equations are der…
Vacuum Einstein metrics with bidimensional Killing leaves.II-Global aspects
G. sparano, G. Vilasi, A. Vinogradov
A formalism (zeta-complex analysis), allowing one to construct global Einstein metrics by matching together local ones described in the papers Phys. Lett. B 513(2001)142-146; Diff.…
Vacuum Einstein metrics with bidimensional Killing leaves. I-Local aspects
G. Sparano, G. Vilasi, A. Vinogradov
The solutions of vacuum Einstein's field equations, for the class of Riemannian metrics admitting a non Abelian bidimensional Lie algebra of Killing fields, are explicitly describe…
Spin-1 gravitational waves and their natural sources
F. Canfora, G. Vilasi
Non-vacuum exact gravitational waves invariant for a non Abelian two-dimensional Lie algebra generated by two Killing fields whose commutator is of light type, are described. The p…