Schwinger terms in 1+1 dimensions

Details Schwinger terms in 1+1 dimensions Schwinger terms in 1+1 dimensions

1999-07-15

arxiv.org/abs/hep-th/9907118v1

Czech.J.Phys. 49 (1999) 915-931

Physics

High Energy Physics

High Energy Physics - Theory

LaTex, 19 pages

Scientific paper

10.1023/A:1021420801486

The two different approaches - K\"{a}llen's and Brandt's methods - for the calculations of the Schwinger terms in the 1+1 dimensional Abelian and non-Abelian free current algebras are discussed. These methods are applied to calculation of the single and double commutators. The validity of the Jacobi identities is examined in 1+1 and 3+1 dimensions and in this way is given natural restriction on the regularization. It is shown that the Jacobi identity cannot be broken in 1+1 dimensions even using the regularization which fails in the 3+1 dimensional case. A connection between the Schwinger term and anomaly is shown in the simplest case of the Schwinger model.

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