56 citations · 259 across the 41 of their papers we have counts for
42 papers
Generators of Local Lorentz Transformation in ADM-Vielbein Formalism of Gravitational Relativity
Alireza Faraji, Zahra Molaee, Ahmad Shirzad
General relativity contains 16 variables in the framework of ADM-Vielbein formalism which are 6 more than metric formalism. These variables emerge due to additional symmetry of Loc…
Constraint structure of the Generalized Proca model in the Lagrangian formalism
Zahra Molaee, Ahmad Shirzad
We present a new Lagrangian approach for the dynamical structure of the generalized Proca theory (GP). This approach includes the A-Z constraint structure of the model in the Lagra…
Hamiltonian Structure of Fierz-Pauli Gravitons, Partially Massless Fields and Gauge Symmetry
Rezvan Jalali, Ahmad Shirzad
We study the constraint structure of Fierz -Pauli action in both flat and curved space in the framework of Hamiltonian formalism. We observe an abrupt change in the constraint alge…
Black Hole Entropy and Boundary Conditions
H. Khodabakhshi, A. Shirzad, F. Shojai +1
It is well-known that in order to make the action well defined, one may employ different kinds of boundary conditions (BCs) accompanied by the appropriate Gibbons-Hawking-York (GHY…
Structure of Constrained Systems in Lagrangian Formalism and Degree of Freedom Count
Mohammad Javad Heidari, Ahmad Shirzad
A detailed program is proposed in the Lagrangian formalism to investigate the dynamical behavior of a theory with singular Lagrangian. This program goes on, at different levels, pa…
Gauge generator for bi-gravity and multi-gravity models
Ali Dokhani, Zahra Molaee, Ahmad Shirzad
Following the Hamiltonian structure of bi-gravity and multi-gravity models in the full phase space, we have constructed the generating functional of diffeomorphism gauge symmetry.…