From Spinning Conformal Blocks to Matrix Calogero-Sutherland Models

TL;DR

This paper extends the connection between spinning conformal blocks and matrix Calogero-Sutherland models to arbitrary dimensions, providing new solutions and group-theoretic interpretations for conformal field theory calculations.

Contribution

It develops a general framework linking spinning conformal blocks to matrix-valued Calogero-Sutherland models across dimensions, including boundary cases, and offers explicit solutions and group-theoretic insights.

Findings

Constructed potentials for external tensor fields.

Mapped Schrödinger equations to conformal Casimir equations.

Provided solutions for arbitrary spin and dimension conformal blocks.

Abstract

In this paper we develop further the relation between conformal four-point blocks involving external spinning fields and Calogero-Sutherland quantum mechanics with matrix-valued potentials. To this end, the analysis of \cite{Schomerus:2016epl} is extended to arbitrary dimensions and to the case of boundary two-point functions. In particular, we construct the potential for any set of external tensor fields. Some of the resulting Schr\"{o}dinger equations are mapped explicitly to the known Casimir equations for 4-dimensional seed conformal blocks. Our approach furnishes solutions of Casimir equations for external fields of arbitrary spin and dimension in terms of functions on the conformal group. This allows us to reinterpret standard operations on conformal blocks in terms of group-theoretic objects. In particular, we shall discuss the relation between the construction of spinning blocks in any dimension through differential operators acting on seed blocks and the action of left/right invariant vector fields on the conformal group.