Comments on summing over bordisms in TQFT
Anindya Banerjee, Gregory W. Moore
Journal of High Energy Physics · 2022
doi:10.1007/jhep09(2022)171 (opens in a new tab)
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Abstract
Abstract Recent works in quantum gravity, motivated by the “factorization problem” and “baby universes,” have considered sums over bordisms with fixed boundaries in topological quantum field theory (TQFT). We discuss this construction and observe a curious splitting formula for the total amplitude.
Abstract licence: CC BY
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