[institut] Seminar Grupe za cestice i gravitaciju

[Branislav Cvetkovic]

Postovane kolege,

U petak 9. septembra u 11h  na Institutu za fiziku u citaonici  ,,Dragan 
Popovic'', dr Tatjana Vukasinac (Facultad de Ingeniería Civil, 
Universidad Michoacana de San Nicolás de Hidalgo Morelia, Mexico) ce 
odrzati seminar pod naslovom
"Hamiltonian analysis of general relativity in first order formalism (in 
self-dual variables) in the presence of a weakly isolated horizon". 
Apstrakt vam prosledjujem u nastavku.

Pozdrav Branislav




Abstract

We perform a canonical analysis of general relativity in first order
formalism (in self-dual variables), for spacetimes with a weakly
isolated horizon (WIH) as an internal boundary. Isolated horizons are
quasilocal generalizations of event horizons and their definition is
purely geometrical. On the other hand, the covariant action and the
Hamiltonian formulation  of the theory are sensitive to the choices of
variables and boundary terms. We show that the choice of dynamical
variables on WIH is not unique and use this freedom to construct
different  consistent canonical formulations.

-- 
Institute of Physics Belgrade
Pregrevica 118, 11080 Belgrade, Serbia
http://www.ipb.ac.rs/