We discuss the current status of our calculation of the physics of π and K mesons using three dynamical flavors of improved staggered quarks. This year, we have a new ensemble with a lattice spacing of 0.06 fm and a light sea mass of 0.2ms, as well as significant increases in statistics at several coarser lattice spacings and/or heavier sea masses. Results for decay constants, quark masses, low...

We investigate the mass differences of charm and bottom heavy baryons, using MILC lattice gauge configurations with 2+1 dynamical sea quark flavors. We extend our previous work to three lattice spacings: fine (a≈ 0.09), coarse (a≈ 0.12), and medium-coarse (a≈ 0.15) ensembles. For extrapolations and interpolations, we apply simultaneous quadratic fits and simple linear fits with the full QCD dat...

We combine a light AsqTad antiquark with a nonrelativistic heavy quark to compute the decay constants of heavy-light pseudoscalar mesons using the ensemble of 3-flavor gauge field configurations generated by the MILC collaboration. Preliminary results for fBs and fDs are given and status of the chiral extrapolation to fB is reported. We also touch upon results of the perturbative calculation wh...

The increasing availability of maps of dense polymorphic markers makes use of haplotype data in family-based association analyses an attractive alternative to single marker association tests. We describe a novel class of statistics designed to test for an association between marker haplotypes and a qualitative trait using the parent-parent-affected-offspring trio design. Our haplotype runs test...

Video is a kind of structured data with multi-layer (ML) information, e.g., a shot is consisted of three layers including shot, keyframe, and region. Moreover, multi-instance (MI) relation is embedded along the consecutive layers. Both the ML structure and MI relation are essential for video concept detection. The previous work [5] dealt with ML structure and MI relation by constructing a MLMI ...

The running coupling and the Kugo-Ojima parameter of unquenched lattice Landau gauge are simulated and compared with the continuum theory. Although the running coupling measured by the ghost and gluon dressing function is infrared suppressed, the running coupling has the maximum of α0 ∼ 2−2.5 at around q = 0.5GeV irrespective of the fermion actions (Wilson fermions and Kogut-Susskind(KS) fermio...

We known that the three major methods to recrystallize amorphous silicon are: Rapid Thermal Annealing(RTA), Excimer Laser Crystallization (ELC) and Solid Phase Crystallization(SPC)[3.1][3.2].Solid phase crystallization and RTA has several advantages over laser crystallization which include smoother surfaces, better uniformity, and batch process in furnace annealing. But in order to achieve the ...

I give a status report on the validity of the so-called “fourth-root trick”, i.e. the procedure of representing the determinant for a single fermion by the fourth root of the staggered fermion determinant. This has been used by the MILC collaboration to create a large ensemble of lattices using which many quantities of physical interest have been and are being calculated. It is also used extens...

Graphics Processing Units (GPU) are becoming increasingly popular in high performance computing due to their high performance, high power efficiency, and low cost. Lattice QCD is one of the fields that has successfully adopted GPUs and scaled to hundreds of them. In this paper, we report our Cray XK6 experience in profiling and understanding performance for MILC, one of the Lattice QCD computat...