Energy-momentum tensors in gauge theory

Details Energy-momentum tensors in gauge theory Energy-momentum tensors in gauge theory

2002-07-02

arxiv.org/abs/hep-th/0207021v1

Physics

High Energy Physics

High Energy Physics - Theory

5 pages, The talk in XXY International Workshop on Fundamental Problems of High Energy Physics and Field Theory (25-28 June, P

Scientific paper

In field theory on a fibre bundle Y->X, an energy-momentum current is associated to a lift onto Y of a vector field on X. Such a lift by no means is unique, and contains a vertical part. It follows that: (i) there are a set of different energy-momentum currents, (ii) the Noether part of an energy-momentum current can not be taken away, (iii) if a Lagrangian is not gauge-invariant, the energy-momentum fails to be conserved.

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