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gr-qc2000
Gravitational Energy-Momentum in MAG
James M. Nester, Chiang-Mei Chen, Yu-Heui Wu
Energy-momentum (and angular momentum) for the Metric-Affine Gravity theory is considered from a Hamiltonian perspective (linked with the Noether approach). The important roles of…
gr-qc2000
Gravitational Energy-Momentum in the Tetrad and Quadratic Spinor Representations of General Relativity
Roh S. Tung, James M. Nester
In the Tetrad Representation of General Relativity, the energy-momentum expression, found by Moller in 1961, is a tensor wrt coordinate transformations but is not a tensor wrt loca…
gr-qc2000
A Symplectic Hamiltonian Derivation of Quasilocal Energy-Momentum for GR
Chiang-Mei Chen, James M. Nester
The various roles of boundary terms in the gravitational Lagrangian and Hamiltonian are explored. A symplectic Hamiltonian-boundary-term approach is ideally suited for a large clas…