New Energy-Momentum and Angular Momentum Tensors with Applications to Nucleon Structure

Zhen-Lai Wang; De-Tian Yang; Zi-Wei Chen; Tao Lei; Xiang-Song Chen

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arXiv · 1701.08658

New Energy-Momentum and Angular Momentum Tensors with Applications to Nucleon Structure

Zhen-Lai Wang·De-Tian Yang·Zi-Wei Chen·Tao Lei·Xiang-Song Chen

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Abstract

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-state of more than one physical observables, the corresponding physical currents should be proportional to each other. Interestingly, this criterion denies the traditional canonical and symmetric expressions of energy-momentum tensor and their associated expressions of angular momentum tensor. The new tensors we propose can be derived as Noether currents from a Lagrangian with second derivative, and shed new light on the study of nucleon structures.

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Zhen-Lai Wang, De-Tian Yang, Zi-Wei Chen, Tao Lei, Xiang-Song Chen. 2017-01-26. New Energy-Momentum and Angular Momentum Tensors with Applications to Nucleon Structure. https://arxiv.org/abs/1701.08658

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