Solving two-dimensional large-N QCD with a nonzero density of baryons and arbitrary quark mass

Understand

We solve two-dimensional large-N QCD in the presence of a nonzero baryon number B, and for arbitrary quark mass m and volume L.

• We fully treat the dynamics of the gluonic zero modes and check how this affects results from previous studies of the B=0 and B=1 systems.
• For a finite density of baryons, and for any m>0, we find that the ground state contains a baryon crystal with expectation values for psi-bar gamma_mu psi that have a helix-like spatial structure.
• We study how these evolve with B and see that the volume integral of psi-bar psi strongly changes with the baryon density.