We propose a method to study lattice QCD at finite temperature (T) and chemical potential (µ). We test the method and compare it with the Glasgow method using n f =4 staggered QCD with imaginary µ. The critical endpoint (E) of QCD on the Re(µ)-T plane is located. We use n f =2+1 dynam-ical staggered quarks with semi-realistic masses on L t =4 lattices. Our results are based on O(10 3 − 10 4) co...

We test the cooling algorithm with gluonic and staggered hadronic spectroscopy on SU(3) gauge eld conngu-rations generated with two avors of staggered dynamical fermions. We nd cooling is not reliable as the basis for improved hadronic operators. We also nd that performing cooling sweeps to reveal more clearly the topological properties of the gauge elds eliminates the spin structure of the had...

This work presents a PCD (polycrystalline diamond) end mill with a new staggered structure for the milling of CFRP (carbon fiber reinforced plastic). The magnitude and direction of cutting force is decreased and changed by side-edge re-configuration of the structure. The flute and insert pocket of the staggered PCD end mill are designed considering the tool’s stiffness and welding process. The ...

We present a scaling study of the QCD spectrum using a smeared P4 staggered fermion formulation, in which three, five, and seven-link staples are added to reduce the effects of flavor symmetry breaking. These studies are performed on quenched lattices generated using the oneloop improved Symanzik gauge action, with β = 10 g2 = 7.40,7.75,8.00. The corresponding lattice spacings are a = .31 fm, ....

It has been conjectured that spontaneous chiral symmetry breaking in strongly coupled vectorlike gauge theories falls into only three different classes, depending on the gauge group and the representations carried by the fermions. We test this proposal by studying SU(2), SU(3) and SU(4) lattice gauge theories with staggered fermions in different irreducible representations. Staggered fermions a...