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Title:
Scale invariance in quantum field theory
Speaker:
Abstract:
In the context of unitary relativistic quantum field theory fixed points of the RG flow must exhibit scale invariance, yet all known examples are in fact conformal invariant. This enhancement of symmetry indicates a fundamental property of unitary relativistic QFTs, yet the one which is difficult to properly justify. This problem is only solved in two dimensions and partial progress has been achieved in four. In the talk I will review this problem, together with some recent progress, and outline possible directions for the future.
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