TO
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| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
 | DeTar, Carleton | Lattice calculation of heavy-light decay constants with two flavors of dynamical quarks | We present results for f B , f Bs , f D , f Ds and their ratios in the presence of two flavors of light sea quarks (Nf52). We use Wilson light valence quarks and Wilson and static heavy valence quarks; the sea quarks are simulated with staggered fermions. Additional quenched simulations with nonpe... | Wilson quarks; Chiral perturbation | 2002-11 |
| 2 |
 | DeTar, Carleton | Topological susceptibility in staggered fermion chiral perturbation theory | The topological susceptibility of the vacuum in quantum chromodynamics has been simulated numerically using the Asqtad improved staggered fermion formalism. At nonzero lattice spacing, the residual fermion doublers (fermion tastes) in the staggered fermion formalism give contributions to the suscept... | Staggered fermions; Chiral perturbation | 2004-10 |
| 3 |
 | DeTar, Carleton | Topological susceptibility with the improved Asqtad action | Chiral perturbation theory predicts that in quantum chromodynamics light dynamical quarks suppress the topological (instanton) susceptibility.We investigate this suppression through direct numerical simulation using the Asqtad improved lattice fermion action. This action holds promise for carrying... | Chiral perturbation; Staggered fermions | 2003-12 |
| 4 |
 | DeTar, Carleton | Topological susceptibility with three flavors of staggered quarks | As one test of the validity of the staggered-fermion fourth-root determinant trick, we examine the suppression of the topological susceptibility of the QCD vacuum in the limit of small quark mass. The suppression is sensitive to the number of light sea quark flavors. Our study is done in the presenc... | Staggered quarks; Chiral perturbation | 2005-03 |
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