On the spectrum of QCD(1+1) with large numbers of flavours N_F and colours N_C near N_F/N_C = 0

TL;DR

This paper analyzes the spectrum of 1+1 dimensional QCD with large numbers of flavors and colors near the ratio N_F/N_C = 0, using perturbation theory to establish benchmark results for the spectrum's behavior.

Contribution

It introduces a perturbative approach to study the spectrum of QCD(1+1) with large N_F and N_C near zero N_F/N_C, providing new benchmarks for previous models.

Findings

Derived leading behavior of the spectrum near N_F/N_C=0

Provided critical benchmarks for truncated QCD(1+1) models

Reconsidered previous treatments with new perturbative results

Abstract

QCD(1+1) in the limit of a large number of flavours N_F and a large number of colours N_C is examined in the small N_F/N_C regime. Using perturbation theory in N_F/N_C, stringent results for the leading behaviour of the spectrum departing from N_F/N_C = 0 are obtained. These results provide benchmarks in the light of which previous truncated treatments of QCD(1+1) at large N_F and N_C are critically reconsidered.