Glueball Masses from Linearly Confining Supergravity

TL;DR

This paper computes the mass spectrum of 0++ glueballs using a supergravity dual for large N SU(N) gauge theory, finding ratios that match lattice QCD data within five percent, thus supporting the duality approach.

Contribution

It introduces a supergravity-based method to calculate glueball masses in pure N=1 SU(N) gauge theory, providing results consistent with lattice QCD.

Findings

Mass spectrum is discrete with roots determining masses.

Mass ratios are independent of theory parameters.

Results agree with lattice QCD data within five percent.

Abstract

Mass spectrum of 0++ glueballs is produced using a dual supergravity theory we proposed for pure N=1 SU(N) gauge theory in four dimensions in the large N limit in the IR. The glueball states are expressed in terms of Whittaker functions. The spectrum is discrete and a function whose roots give the masses is written. The ratios of the masses are independent of the parameters of the theory and comparison to recent non-supersymmetric large N lattice QCD data available for the lowest three states shows agreement to within five percent.