6 papers
Cosmological Correlators in Gauge Theory and Gravity from EAdS
Md. Abhishek, Charlotte Sleight, Massimo Taronna
In this work we examine in more detail the map between late-time correlators in de Sitter space and boundary correlators in Euclidean anti-de Sitter space, elaborating on the gener…
(Non-)Conserved Currents and Cosmological Correlators
Charlotte Sleight, Massimo Taronna
We study the fate of global symmetries at the late-time boundary of de Sitter space. In anti-de Sitter space, bulk gauge symmetries generally correspond to conserved global current…
Celestial Mellin Amplitudes II: Spin-1 and Spin-2 Exchange, and Beyond
Sébastien Malherbe, Sébastien Malherbe, Paolo Pergola +2
We further develop celestial Mellin amplitudes arXiv:2412.11992 to capture the exchange of particles with spin. For massless external scalar fields, we derive closed-form celestial…
Celestial Holography Revisited
Charlotte Sleight, Massimo Taronna
We revisit the prescription commonly used to define holographic correlators on the celestial sphere of Minkowski space as an integral transform of flat space scattering amplitudes,…
Conformal Partial Wave Expansion of Celestial Correlators
Francesca Pacifico, Charlotte Sleight, Massimo Taronna
A novel definition of holographic correlation functions on the celestial sphere of Minkowski space was recently introduced in arXiv:2301.01810 as the extrapolation of bulk time-ord…
Celestial Mellin Amplitudes
Francesca Pacifico, Paolo Pergola, Charlotte Sleight
Holographic correlators on the celestial sphere of Minkowski space were recently defined in arXiv:2301.01810 as the extrapolation of bulk time-ordered correlation functions to the…