Massless S-matrix Bootstraps and RG Flows

Fuente: arXiv
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Main Author: Ahn, Changrim
Format: Preprint
Published: 2025
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author Ahn, Changrim
author_facet Ahn, Changrim
contents We find complete solutions of S-matrix bootstrap equations for the scatterings of massless particles in (1+1) dimensions with A_n symmetries. We show that only three types (minimal, diagonal, and saturated cases) of these S-matrices can generate RG flows that lead to UV-complete theories, and other RG flows predicted in [11] are inconsistent with the bootstrap equations. Using these S-matrices, we derived the TBA equations and corresponding Y-systems that generate the RG flows between the IR and UV CFTs.
format Preprint
id arxiv_https___arxiv_org_abs_2509_20740
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Massless S-matrix Bootstraps and RG Flows
Ahn, Changrim
High Energy Physics - Theory
We find complete solutions of S-matrix bootstrap equations for the scatterings of massless particles in (1+1) dimensions with A_n symmetries. We show that only three types (minimal, diagonal, and saturated cases) of these S-matrices can generate RG flows that lead to UV-complete theories, and other RG flows predicted in [11] are inconsistent with the bootstrap equations. Using these S-matrices, we derived the TBA equations and corresponding Y-systems that generate the RG flows between the IR and UV CFTs.
title Massless S-matrix Bootstraps and RG Flows
topic High Energy Physics - Theory
url https://arxiv.org/abs/2509.20740