Low-lying Lambda Baryons from the Lattice
  In a lattice QCD calculation with two light dynamical Chirally Improved (CI) quarks we determine ground state and some excited state masses in all four Lambda baryon channels 1/2^\pm and 3/2^\pm. We perform an infinite volume extrapolation and confirm the widely discussed Lambda(1405). We also analyze the amount of octet-singlet mixing, which is helpful in comparing states with the quark model. 
Georg P. Engel, C. B. Lang, Andreas Sch\"afer
hep-lat hep-ph