Instantons in five-dimensional O(N) vector models

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• Silviu Pufu (Princeton)
• Thursday 14 May 2020, 14:00-15:00
• Online (Zoom).

If you have a question about this talk, please contact Dr. Carl Turner.

In this talk, I will review the construction of O(N) vector models above four dimensions, and explain why one might think that, in five dimensions, there should exist O(N)-invariant CFTs at sufficiently large N. However, a closer look at these constructions reveals that the CFTs are non-unitary because instanton effects lead to small imaginary parts of scaling dimensions and OPE coefficients.

This talk is part of the Quantum Fields and Strings Seminars series.

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