Corpus ID: 236493258

Towards the non-perturbative cosmological bootstrap

  title={Towards the non-perturbative cosmological bootstrap},
  author={Matthijs Hogervorst and Jo{\~a}o Penedones and Kamran Salehi Vaziri},
We study Quantum Field Theory (QFT) on a background de Sitter spacetime dSd+1. Our main tool is the Hilbert space decomposition in irreducible unitarity representations of its isometry group SO(d + 1, 1). Throughout this work, we focus on the late-time physics of dSd+1, in particular on the boundary operators that appear in the late-time expansion of bulk local operators. As a first application of the Hilbert space formalism, we recover the Källen-Lehmann spectral decomposition of bulk two… Expand
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