Coset conformal field theory

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In theoretical physics, a coset conformal field theory is a conformal field theory that describes the degrees of freedom not included in a smaller conformal field theory H but included in a bigger conformal field theory G. The coset is called G/H and its stress-energy tensor is a difference of the tensors from G minus the tensor from H whenever the coset can be constructed.

The coset CFT is often used together with the Sugawara theory.