4 papers
Cosmological Weight-Shifting Matrices
Claire de Korte, Harry Goodhew, Kamran Salehi Vaziri +1
We construct matrices that shift the scaling dimension of scalar fields for arbitrary de Sitter Feynman diagrams. Acting on a set of master integrals, these weight-shifting matrice…
Differential Equations for Massive Correlators
Daniel Baumann, Austin Joyce, Hayden Lee +1
We uncover a combinatorial structure governing the differential equations satisfied by wavefunction coefficients of scalar fields with generic masses in de Sitter space. Using an i…
Microstate counting from defects in de Sitter
Jan de Boer, Diego Liska, Kamran Salehi Vaziri
We explore the microscopic origin of de Sitter entropy using a Lorentzian path-integral approach. We construct a Hilbert space whose states are associated with configurations of th…
A non-perturbative construction of the de Sitter late-time boundary
Kamran Salehi Vaziri
We propose a new approach for constructing the late-time conformal boundary of quantum field theory in de Sitter spacetime. A boundary theory which consists of a continuous family…