A Universal flow invariant in quantum field theory

  title={A Universal flow invariant in quantum field theory},
  author={Damiano Anselmi},
  journal={Classical and Quantum Gravity},
  • D. Anselmi
  • Published 14 January 2001
  • Physics
  • Classical and Quantum Gravity
A flow invariant is a quantity depending only on the ultraviolet (UV) and infrared (IR) conformal fixed points and not on the flow connecting them. Typically, its value is related to the central charges a and c. In classically conformal field theories, scale invariance is broken by quantum effects and the flow invariant aUV-aIR is measured by the area of the graph of the beta function between the fixed points. There exists a theoretical explanation of this non-trivial fact. On the other hand… 

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