Constraining CFTs with moduli spaces


Sharon, A. (2024). Constraining CFTs with moduli spaces. Perimeter Institute. https://pirsa.org/24040077


Sharon, Adar. Constraining CFTs with moduli spaces. Perimeter Institute, Apr. 02, 2024, https://pirsa.org/24040077


          @misc{ pirsa_PIRSA:24040077,
            doi = {10.48660/24040077},
            url = {https://pirsa.org/24040077},
            author = {Sharon, Adar},
            keywords = {Quantum Fields and Strings},
            language = {en},
            title = {Constraining CFTs with moduli spaces},
            publisher = {Perimeter Institute},
            year = {2024},
            month = {apr},
            note = {PIRSA:24040077 see, \url{https://pirsa.org}}

Adar Sharon Stony Brook University


Moduli spaces of vacua are an intriguing property of certain supersymmetric QFTs which have been widely explored. However, a first-principles approach to moduli spaces and how they constrain observables is still lacking. This question is even more pressing due to recent interest in moduli spaces in theories with only two supercharges, where supersymmetry is extremely weak and does not allow for exact computations. In this talk we attempt to bootstrap conformal field theories with moduli spaces. First we assume an additional global symmetry which is spontaneously broken along the moduli space, and use techniques from the large charge expansion to show that the existence of a moduli space directly constrains CFT data of charged operators. We then study the generic case by using a "moduli space bootstrap equation" to write down perturbative sum rules on observables of CFTs order-by-order in a small coupling. We discuss several examples and applications of our results. 


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