Year: 2026
Type: article
Abstract: A bstract In this paper,we explore the cluster algebras for symbol letters or singularities of cosmological correlators in a conformally coupled scalar field theory. We show that the symbol letters for tree-level n -site ladder cosmological correlators are governed by A 2( n −1) cluster algebras. Additionally, we demonstrate that the symbol letters for one-loop bubble cosmological correlator are an union of two A 3 cluster algebras. The algebras relations of letters will provide an important tool to bootstrap analytic cosmological correlators.
Source: Journal of High Energy Physics
Authors: Pouria Mazloumi, Xiaofeng Xu
Institutions: Johannes Gutenberg University Mainz, Xiamen University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Funder: Deutsche Forschungsgemeinschaft
OpenAlex ID: W7141036184