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- Centre National de la Recherche ScientifiqueFR568 papers
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283 papers · 1 filter
Unimodular time in JT gravity: a holographic clock
Altay Etkin, Farbod-Sayyed Rassouli
How is a ''bulk clock'' encoded holographically? We address this in Jackiw-Teitelboim (JT) gravity, where a natural physical clock emerges by promoting the vacuum energy to a dynam…
Extending Weinberg's EFT: effective scalar-tensor theories up to sixth order
Eugeny Babichev, Sukŗti Bansal, Maria Mylova +1
We present a systematic construction of the six-derivative effective scalar-tensor theories, extending the four-derivative framework previously developed by Steven Weinberg. The on…
Soft unification of exceptional effective field theories in de Sitter space
Zong-Zhe Du
We uncover a surprising universal soft behaviour (USB) of a de Sitter (dS) S-matrix for \textit{all} exceptional effective field theories (EFTs) in dS space, stemming from the rece…
New Exceptional EFTs in de Sitter Space from Generalised Energy Conservation
Zong-Zhe Du, David Stefanyszyn
We discover a surprising relationship between exceptional effective field theories (EFTs) in de Sitter space and a notion of \textit{generalised energy conservation} (GEC) of an S-…
A Match Made in Heaven: Linking Observables in Inflationary Cosmology
David Stefanyszyn, Xi Tong, Yuhang Zhu
Cosmological correlation functions of inflaton and graviton perturbations are the fundamental observables of early universe cosmology and remain a primary target for observations.…
Octonions, complex structures and Standard Model fermions
Kirill Krasnov
This article is a write-up of the talk given in one of the mini-symposia of the 2024 European Congress of Mathematicians. I will explain some basics of the representation theory un…