On the bosonic spectrum of QCD with currents

Uwe Trittmann
2000 Nuclear Physics B  
In this note we calculate the spectrum of two-dimensional QCD. We formulate the theory with SU(N_c) currents rather than with fermionic operators. We construct the Hamiltonian matrix in DLCQ formulation as a function of the harmonic resolution K and the numbers of flavors N_f and colors N_c. The resulting numerical eigenvalue spectrum is free from trivial multi-particle states which obscured previous results. The well-known 't Hooft and large N_f spectra are reproduced. In the case of adjoint fermions we present some new results.
doi:10.1016/s0550-3213(00)00469-7 fatcat:uwkm24lofzflpkkibza6vjjcpa