Interaction of Branes at Angles in M(atrix) Model
  Interactions of relatively rotated Dp-branes in 1, 2, 3 and 4 angles in M(atrix) model are calculated and it is found to be in agreement with string theory calculations. In 4 angles case the agreement is achieved after subtracting the contribution of the single chiral fermionic zero mode. 
K. Kaviani, S. Parvizi, A.H. Fatollahi