The phase diagram of QCD with two and four flavors: results with HYP   fermions
  We study the finite temperature phase transition of four and two flavor staggered fermions with hypercubic smeared link actions. These preliminary studies suggest that the improved flavor symmetry of the fermionic action can have a significant effect on the finite temperature phase diagram. 
A. Hasenfratz (Colorado U.) and F. Knechtli (Humboldt U.)