IPM Calendar 
Friday 29 March 2024   Today  
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 ...