Expectation value of composite field $T{\bar T}$ in two-dimensional quantum field theory

Details Expectation value of composite field $T{\bar T}$ in two-dimensional quantum field theory Expectation value of composite field $T{\bar T}$ in two-dimensional quantum field theory

2004-01-21

arxiv.org/abs/hep-th/0401146v1

Physics

High Energy Physics

High Energy Physics - Theory

12 pages

Scientific paper

I show that the expectation value of the composite field $T{\bar T}$, built
from the components of the energy-momentum tensor, is expressed exactly through
the expectation value of the energy-momentum tensor itself. The relation is
derived in two-dimensional quantum field theory under broad assumptions, and
does not require integrability.

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