From the 1 of 9 linked papers with an AI index.
9 papers
From Cosmological Cuts to Yang--Mills Wavefunctions in de Sitter Space
Song He, Jiajie Mei, Yuyu Mo
The paper computes tree‑level Yang–Mills wavefunctions in four‑dimensional de Sitter space by analyzing their discontinuities (cosmological cuts) and reconstructs explicit four‑, f…
Beyond Discontinuities: Cosmological WFCs and the Supersymmetric Orthogonal Grassmannian
Yu-tin Huang, Chia-Kai Kuo, Yohan Liu +1
We construct an supersymmetric Grassmannian representation of tree-level wavefunction coefficients (WFCs) by combining Grassmannian representations of energy discont…
Cosmological Dressing Rules
Chandramouli Chowdhury, Arthur Lipstein, Joe Marshall +2
The basic observables in cosmology are known as in-in correlators. Recent calculations have revealed that in-in correlators in four dimensional de Sitter space exhibit hidden simpl…
Cosmological Correlator Discontinuities from Scattering Amplitudes
Chandramouli Chowdhury, Sadra Jazayeri, Arthur Lipstein +3
Recent theoretical work has revealed that basic observables of quantum field theory in de Sitter space, known as in-in or cosmological correlators, exhibit surprisingly simple math…
Constraints on Long-Range Forces in De Sitter Space
Daniel Baumann, Kurt Hinterbichler, Callum R. T. Jones +4
The representation theory of de Sitter space admits partially massless (PM) particles, but whether such particles can participate in consistent interacting theories remains unclear…
Soft Photon, Gluon and Graviton Theorems in (A)dS from Conformal Invariance
Jiajie Mei, Yuyu Mo
We present new soft theorems for photon, gluon, and graviton correlators at tree level in (Anti)-de Sitter space. The results are derived by applying conformal Ward identities to c…