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Lagrangian field theories and energy‐momentum tensors

 

作者: Gerardo Muñoz,  

 

期刊: American Journal of Physics  （AIP Available online 1996）
卷期: Volume 64, issue 9  

页码: 1153-1157

 

ISSN:0002-9505

 

年代: 1996

 

DOI:10.1119/1.18336

 

出版商: American Association of Physics Teachers

 

关键词: FIELD THEORIES;LAGRANGIAN FUNCTION;ENERGY−MOMENTUM TENSOR;POINCARE GROUPS;GAUGE INVARIANCE;CONSERVATION LAWS;INVARIANCE PRINCIPLES;03.30;03.50;03.70;41.

 

数据来源: AIP

 

摘要:

We discuss the implications of Poincaré invariance within the context of Lagrangian field theories. It is shown that the correct implementation of this invariance leads in a straightforward manner to a conserved energy‐momentum tensor which is both symmetric and gauge invariant.

 

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