Research output: Contribution to journal › Article › peer-review
Energy-Momentum Pseudotensor and Superpotential for Generally Covariant Theories of Gravity of General Form. / Ilin, Roman; Пастон, Сергей Александрович.
In: Universe, Vol. 6, No. 10, 173, 11.10.2020.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Energy-Momentum Pseudotensor and Superpotential for Generally Covariant Theories of Gravity of General Form
AU - Ilin, Roman
AU - Пастон, Сергей Александрович
PY - 2020/10/11
Y1 - 2020/10/11
N2 - The current paper is devoted to the investigation of the general form of the energy–momentum pseudotensor (pEMT) and the corresponding superpotential for the wide class of theories. The only requirement for such a theory is the general covariance of the action without any restrictions on the order of derivatives of the independent variables in it or their transformation laws. As a result of the generalized Noether procedure, we obtain a recurrent chain of the equations, which allows one to express canonical pEMT as a divergence of the superpotential. The explicit expression for this superpotential is also given. We discuss the structure of the obtained expressions and the conditions for the derived pEMT conservation laws to be satisfied independently (fully or partially) by the equations of motion. Deformations of the superpotential form for theories with a change in the independent variables in action are also considered. We apply these results to some interesting particular cases: general relativity and its modifications, particularly mimetic gravity and Regge–Teitelboim embedding gravity.
AB - The current paper is devoted to the investigation of the general form of the energy–momentum pseudotensor (pEMT) and the corresponding superpotential for the wide class of theories. The only requirement for such a theory is the general covariance of the action without any restrictions on the order of derivatives of the independent variables in it or their transformation laws. As a result of the generalized Noether procedure, we obtain a recurrent chain of the equations, which allows one to express canonical pEMT as a divergence of the superpotential. The explicit expression for this superpotential is also given. We discuss the structure of the obtained expressions and the conditions for the derived pEMT conservation laws to be satisfied independently (fully or partially) by the equations of motion. Deformations of the superpotential form for theories with a change in the independent variables in action are also considered. We apply these results to some interesting particular cases: general relativity and its modifications, particularly mimetic gravity and Regge–Teitelboim embedding gravity.
KW - gravitational energy
KW - energy-momentum pseudotensor
KW - energy-momentum superpotential
KW - noether theorem
KW - general covariance
KW - mimetic gravity
KW - Regge-Teitelboim embedding gravity
KW - CONSERVATION-LAWS
KW - ANGULAR-MOMENTUM
KW - FORMULATION
KW - CONSTRAINTS
KW - RELATIVITY
KW - CURRENTS
U2 - 10.3390/universe6100173
DO - 10.3390/universe6100173
M3 - статья
VL - 6
JO - Universe
JF - Universe
SN - 2218-1997
IS - 10
M1 - 173
ER -
ID: 73846672