52 citations · 56 across the 7 of their papers we have counts for
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hep-th2023★ 2 cited
A radial variable for de Sitter two-point functions
Manuel Loparco, Jiaxin Qiao, Zimo Sun
We introduce a "radial" two-point invariant for quantum field theory in de Sitter (dS) analogous to the radial coordinate used in conformal field theory. We show that the two-point…
hep-th2023★ 52 cited
The Källén-Lehmann representation in de Sitter spacetime
Manuel Loparco, Joao Penedones, Kamran Salehi Vaziri +1
We study two-point functions of symmetric traceless local operators in the bulk of de Sitter spacetime. We derive the Källén-Lehmann spectral decomposition for any spin and show th…