The $O(N)$ Model in $4<d<6$: Instantons and Complex CFTs

21 Jul 2020 Giombi Simone Huang Richard Klebanov Igor R. Pufu Silviu S. Tarnopolsky Grigory

We revisit the scalar $O(N)$ model in the dimension range $4<d<6$ and study the effects caused by its metastability. As shown in previous work, this model formally possesses a fixed point where, perturbatively in the $1/N$ expansion, the operator scaling dimensions are real and above the unitarity bound... (read more)

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  • HIGH ENERGY PHYSICS - THEORY