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gr-qc2019
On the Uniqueness of Einstein-Cartan Theory: Lagrangian, Covariant Derivative and Equation of Motion
Zi-Wei Chen, Run Diao, Xiang-Song Chen
In the standard Einstein-Cartan theory(EC), matter fields couple to gravitation field through the Minimal Coupling Procedure(MCP), yet leaving the theory an ambiguity: applying MCP…
gr-qc2019
A New Improved Energy-Momentum Tensor and Its Possible Role in Gravity
Tao Lei, Zi-Wei Chen, Zhen-Lai Wang +1
Motivated by a special consideration in quantum measurement, we present a new improved energy-momentum tensor. The new tensor differs from the traditional canonical and symmetric o…
gr-qc2017
Gravitational Coupling from Active Gravity
Tao Lei, Zi-Wei Chen, Zhen-Lai Wang +1
We attempt to construct a gravitational coupling by pre-selecting an energy-momentum tensor as the source for gravitational field. The energy-momentum tensor we take is a recently…