4 papers
Lie algebras of curves and loop-bundles on surfaces
Juan Alonso, Miguel Paternain, Javier Peraza +1
W. Goldman and V. Turaev defined a Lie bialgebra structure on the -module generated by free homotopy classes of loops of an oriented surface (i.e. the conjugacy classes…
Generalized BMS charge algebra
Miguel Campiglia, Javier Peraza
It has been argued that the symmetries of gravity at null infinity should include a Diff factor associated to diffeomorphisms on the celestial sphere. However, the standard…
On the classical and quantum Geroch group
Javier Peraza, Miguel Paternain, Michael Reisenberger
The Geroch group is an infinite dimensional transitive group of symmetries of classical cylindrically symmetric gravitational waves which acts by non-canonical transformations on t…
A complete classification of S1-symmetric static vacuum black holes
Martín Reiris, Javier Peraza
In a seminal paper of 1917, H. Weyl presented a remarkable reduction of the static axisymmetric vacuum Einstein equations, serving as a relatively straightforward technique to gene…