Energy-momentum tensors in linearized Einstein's theory and massive gravity: The question of uniqueness

@article{Bivcak2016EnergymomentumTI,
title={Energy-momentum tensors in linearized Einstein's theory and massive gravity: The question of uniqueness},
author={J. Bivc'ak and J. Schmidt},
journal={Physical Review D},
year={2016},
volume={93},
pages={024009}
}

The question of the uniqueness of energy-momentum tensors in the linearized general relativity and in the linear massive gravity is analyzed without using variational techniques. We start from a natural ansatz for the form of the tensor (for example, that it is a linear combination of the terms quadratic in the first derivatives), and require it to be conserved as a consequence of field equations. In the case of the linear gravity in a general gauge we find a four-parametric system of conserved… CONTINUE READING