New BPS Objects in N=2 Supersymmetric Gauge Theories
  We explore BPS soliton configurations in N=2 supersymmetric Yang-Mills theory with matter fields arising from parallel D3 branes on D7 branes. Especially we focus on two parameter family of 1/8 BPS equations, dyonic objects, and 1/8 BPS objects and raise a possibility of absence of BPS vortices when the number of D3 branes is larger than that of D7 branes. 
Kimyeong Lee, Ho-Ung Yee (KIAS)