Speaker
Guillermo A. Mena Marugán
(IEM, CSIC)
Description
There is a growing interest in investigating Kantowski-Sachs cosmologies owing to their relation with the interior of nonrotating, uncharged black holes. In particular, we recently developed a Hamiltonian formulation of axial perturbations for a massless scalar field minimally coupled to these cosmologies, describing physical perturbations by gauge invariants. Adopting this formulation, we offer a clear geometric interpretation of Darboux transformations between (axial) gauge invariants, understanding them as generalized canonical transformations that preserve the Hamiltonian structure of the perturbations in the black hole interior.
Primary author
Guillermo A. Mena Marugán
(IEM, CSIC)
Co-author
Andrés Mínguez-Sánchez
(IEM-CSIC)
