doi: 10.7392/openaccess.45011850
The issues, such as the negative energy density of the gravito-static field and the lack of an energy-momentum tensor in General Relativity (GR), have a long history. To provide possible resolutions for these issues, based on the U (1) gauge theory of gravity, the gravito-static and gravito-magnetic field lines are introduced for the positive/negative gravitational charge and current, respectively. It is shown that the direction of gravitational force acting on a negative gravitational charge is opposite to that of the gravitational field. Then we show that positive energy is stored in the gravitational field and that the exchanged energy between the gravitational field and gravitational charges/currents is always positive. The energy-momentum tensor,T_g^μν,of the vector gravitational field is introduced and has the following physical properties: (1) symmetric, T_g^μν= T_g^νμ; (2) positive energy density, T_g^00>0; (3) zero trace, T_gμ^μ=0; (4) conserved, (∂T_gν^μ)/(∂x_μ )=0; (5) localizable.
Keywords: positive and negative potential energy, energy-momentum tensor, negative gravitational charge, gravitational field line, Gravitodynamics.
Citation: Peng, H. (2016). Positive Energy, Negative Energy, Energy-Momentum Tensor and Negative Charge of Gravitational Field. Open Science Repository Physics, Online(open-access), e45011850. doi:10.7392/openaccess.45011850
Received: March 16, 2016
Published: March 30, 2016
Copyright: © 2016 Peng, H. Creative Commons Attribution 3.0 Unported License.
Contact: [email protected]
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APA
Peng, H. (2016). Positive Energy, Negative Energy, Energy-Momentum Tensor and Negative Charge of Gravitational Field. Open Science Repository Physics, Online(open-access), e45011850. doi:10.7392/openaccess.45011850
MLA
Peng, Hui. “Positive Energy, Negative Energy, Energy-Momentum Tensor and Negative Charge of Gravitational Field.” Open Science Repository Physics Online.open-access (2016): e45011850. Web. 30 Mar. 2016.
Chicago
Peng, Hui. “Positive Energy, Negative Energy, Energy-Momentum Tensor and Negative Charge of Gravitational Field.” Open Science Repository Physics Online, no. open-access (March 30, 2016): e45011850. doi:10.7392/openaccess.45011850.
Harvard
Peng, H., 2016. Positive Energy, Negative Energy, Energy-Momentum Tensor and Negative Charge of Gravitational Field. Open Science Repository Physics, Online(open-access), p.e45011850. Available at: http://www.open-science-repository.com/physics-45011850.html.
Science
1. H. Peng, Positive Energy, Negative Energy, Energy-Momentum Tensor and Negative Charge of Gravitational Field, Open Sci. Repos. Phys. Online, e45011850 (2016).
Nature
1. Peng, H. Positive Energy, Negative Energy, Energy-Momentum Tensor and Negative Charge of Gravitational Field. Open Sci. Repos. Phys. Online, e45011850 (2016).
Research registered in the DOI resolution system as: 10.7392/openaccess.45011850.