Thursday 18 April 2024 |
Events for day: Thursday 28 June 2018 |
10:00 - 11:00 Weekly Seminar Biological Applications of Cold Plasma Technology School BIOLOGICAL SCIENCES The Seminar will be held at Farmanieh Building, Class A ... 11:00 - 12:00 Theory Weekly Seminar(TWS) Hamiltonian Structure of Three Dimensional Gravity in Vielbein Formalis School PARTICLES AND ACCELERATORS Considering Chern-Simons like gravity theories in three dimensions as first order systems, we analyze the Hamiltonian structure of three theories TMG, NMG and ZDG. We show that these systems demonstrate a new feature of the constrained systems in which a new kind of constraints emerge due to factorization of determinant of the matrix of Poisson brackets of constraints. We find the desired number of degrees of freedom, as well as the generating functional of local Lorentz transformations and diffeomorphism, through canonical structure of the system. We also compare the Hamiltonian structure of linearized version of the considered models with t ... |