Mass generation with adjoint fermions

TL;DR

This paper studies a QCD-like gauge theory with adjoint fermions, deriving the spectrum of mesons and glueballs, and introduces a new bound state that explains key spectral and thermodynamic features.

Contribution

It presents a novel bound state of adjoint fermion and gluon, and matches spectral data with lattice results using the field correlator formalism.

Findings

Spectrum of mesons and glueballs agrees with lattice data

Discovery of a new bound state close in mass to glueballs

Main spectral and thermodynamic features explained by this bound state

Abstract

The QCD-like gauge theory with adjoint fermions is considered in the field correlator formalism and the total spectrum of mesons and glueballs is obtained in agreement with available lattice data. A new state of a white fermion appears, as a bound state of the adjoint fermion and gluon with the mass close to that of glueball. It is shown, that the main features of spectra and thermodynamics of adjoint fermions can be explained by this new bound state.