Chern-Simons form Guide, Meaning , Facts, Information and Description

In mathematics, the Chern-Simons forms are certain secondary characteristic classes. They have been found to be of interest in gauge theory, and they (especially the 3-form) define the action of Chern-Simons theory.

Given a manifold and a Lie algebra valued 1-form, over it, we can define a family of p-forms:

In one dimension, the Chern-Simons 1-form is given by

.

In three dimensions, the Chern-Simons 3-form is given by

.

In five dimensions, the Chern-Simons 5-form is given by

where the curvature F is defined as

.

The general Chern-Simons form is defined in such a way that where the wedge product is used to define .

See gauge theory for more details.

In general, the Chern-Simons p-form is defined for any odd p. See gauge theory for the definitions. Its integral over a p dimensional manifold is a homotopy invariant. This value is called the Chern number.

See also Topological quantum field theory and Chiral anomaly.

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