Expectation value of composite field T anti-T in two-dimensional quantum field theory

Jan, 2004
13 pages
e-Print:
Report number:
  • BONN-TH-2004-02

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Abstract:
I show that the expectation value of the composite field TTˉT{\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.
  • dimension: 2
  • operator: composite
  • operator product expansion
  • tensor: energy-momentum