Abstract
We introduce the software blocks_3d for computing four-point conformal blocks of operators with arbitrary Lorentz representations in 3d CFTs. It uses Zamolodchikov-like recursion relations to numerically compute derivatives of blocks around a crossing-symmetric configuration. It is implemented as a heavily optimized, multi-threaded, C++ application. We give performance benchmarks for correlators containing scalars, fermions, and stress tensors. As an example application, we recompute bootstrap bounds on four-point functions of fermions and study whether a previously observed sharp jump can be explained using the “fake primary” effect. We conclude that the fake primary effect cannot fully explain the jump and the possible existence of a “dead-end” CFT near the jump merits further study.
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ArXiv ePrint: 2011.01959
Simons Collaboration on the Nonperturbative Bootstrap. (Walter Landry)
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Erramilli, R.S., Iliesiu, L.V., Kravchuk, P. et al. blocks_3d: software for general 3d conformal blocks. J. High Energ. Phys. 2021, 6 (2021). https://doi.org/10.1007/JHEP11(2021)006
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DOI: https://doi.org/10.1007/JHEP11(2021)006