4 papers
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…
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…
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…
New Energy-Momentum and Angular Momentum Tensors with Applications to Nucleon Structure
Zhen-Lai Wang, De-Tian Yang, Zi-Wei Chen +2
We present a new type of energy-momentum tensor and angular momentum tensor. They are motivated by a special consideration in quantum measurement: Given a wave in mutual eigen-stat…