Magnetic polarizability of hadrons from lattice QCD
  We extract the magnetic polarizability from the quadratic response of a hadron's mass shift in progressively small static magnetic fields. The calculation is done on a 24x12x12x24 lattice at a = 0.17 fm with an improved gauge action and the clover quark action. The results are compared to those from experiments and models where available. 
L. Zhou, F.X. Lee, W. Wilcox, J. Christensen