Anomalous commutators for energy-momentum tensors
| dc.creator | Muniain, Javier P. | |
| dc.creator | Piriz, Dardo D. | |
| dc.date | 1995-05-02 | |
| dc.date.accessioned | 2026-07-25T21:43:42Z | |
| dc.description | Anomalous contributions to the energy-momentum commutators are calculated for even dimensions, by using a non-perturbative approach that combines operator product expansion and Bjorken-Johnson-Low limit techniques. We first study the two dimensional case and give the covariant expression for the commutators. The expression in terms of light-cone coordinates is then calculated and found to be in perfect agreement with the results in the literature. The particular scenario of the light-cone frame is revisited using a reformulation of the BJL limit in such a frame. The arguments used for $n=2$ are then generalized to the case of any even dimensional Minkowskian spacetime and it is shown that there are no anomalous contributions to the commutators for $n\not=2$. These results are found to be valid for both fermionic and bosonic free fields. A generalization of the BJL-limit is later used to obtain double commutators of energy-momentum tensors and to study the Jacobi identity. The two dimensional case is studied and we find no existance of 3-cocycles in both the Abelian and non-Abelian case. | |
| dc.description | 17 pages, latex, no figures | |
| dc.identifier | https://arxiv.org/abs/hep-th/9505010 | |
| dc.identifier | http://arxiv.org/abs/hep-th/9505010 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/82301 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Anomalous commutators for energy-momentum tensors | |
| dc.type | text |