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- Subhasish Basak, Ikuro Sato, +7 authors Adam Lichtl
- 2006

The effects of Gaussian quark-field smearing and analytic stout-link smearing on the correlations of gauge-invariant extended baryon operators are studied. Gaussian quark-field smearing substantially reduces contributions from the short wavelength modes of the theory, while stout-link smearing significantly reduces the noise from the stochastic evaluations.… (More)

- Thomas Appelquist, George T Fleming, Ethan T Neil
- Physical review letters
- 2008

We study the extent of the conformal window for an SU(3) gauge theory with N{f} Dirac fermions in the fundamental representation. We present lattice evidence for 12<or=N{f}<or=16 that the infrared behavior is governed by a fixed point, while confinement and chiral symmetry breaking are present for N{f}<or=8.

The dynamical N = 1, SU(2) Super Yang-Mills theory is studied on the lattice using a new lattice fermion regulator, domain wall fermions. This formulation even at non-zero lattice spacing does not require fine-tuning, has improved chiral properties and can produce topological zero-mode phenomena. Numerical simulations of the full theory on lattices with the… (More)

- R C Brown, A Poole, G T Fleming
- Cancer letters
- 1983

The cell transforming ability of asbestos dust was investigated using C3H10T 1/2 murine fibroblasts. In a series of experiments both crocidolite and amosite caused no increase in the number of transformed foci over that seen in cultures from untreated cells. The dusts, were, however, capable of augmenting the oncogenic effect of benzo[a]pyrene (BP). This… (More)

Dynamical electroweak symmetry breaking (DEWSB) has been a viable option for the completion of the standard model for over thirty years. Precision electroweak studies indicate that the new strong interactions that break EW symmetry cannot be a scaled-up copy of QCD. Building viable models of DEWSB is difficult without a detailed understanding of such… (More)

- Lhpc Collaboration, R G Edwards, +7 authors W Schroers

Moments of unpolarized, helicity, and transversity distributions, electromagnetic form factors, and generalized form factors of the nucleon are presented from a preliminary analysis of lattice results using pion masses down to 359 MeV. The twist two matrix elements are calculated using a mixed action of domain wall valence quarks and asqtad staggered sea… (More)

We discuss the calculation of disconnected diagrams needed for determining the strange quark content of the nucleon on the lattice. We present results for the strange scalar form factor and the related parameter f T s , which enters into the cross-section for the scattering of dark matter off nuclei in supersymmetric extensions of the standard model. In… (More)

- A Poole, R C Brown, G T Fleming
- Environmental health perspectives
- 1983

The cell transforming ability of asbestos dusts was investigated using C3H10T1/2 murine fibroblasts. In a series of experiments, crocidolite and amosite caused no increase in the number of transformed colonies over that seen in cultures from untreated cells. The dusts were, however, capable of augmenting the oncogenic effect of benzo(a)pyrene. This… (More)

- Robert G. Edwards, Thomas Jefferson, +7 authors Wolfram Schroers

Generalized parton distributions encompass a wealth of information concerning the three-dimensional quark and gluon structure of the nucleon, and thus provide an ideal focus for the study of hadron structure using lattice QCD. The special limits corresponding to form factors and parton distributions are well explored experimentally, providing clear tests of… (More)

We present results from simulations of two flavor QCD thermodynamics at N t = 4 with domain wall fermions. In contrast to other lattice fermion formulations, domain wall fermions preserve the full SU L (N f) ⊗ SU R (N f) symmetry of the continuum at finite lattice spacing (up to terms exponentially small in an extra parameter). Just above the phase… (More)