Filters: Date: "2000-04" Collection: ir_uspace
1 - 25 of 5
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
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DeTar, Carleton | First signs for string breaking in two-flavor QCD | We have been examining the phenomenon of string breaking in QCD with two flavors of dynamical staggered quarks. We construct a transfer matrix from a combination of "string" and "two-meson" channels. Preliminary results with low statistics show the expected signs of string breaking. | String breaking; Wilson loop; Staggered quarks | 2000-04 |
| 2 |
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DeTar, Carleton | Heavy-light decay constants with dynamical gauge configurations and Wilson or improved valence quark actions | We describe a calculation of heavy-light decay constants including virtual quark loop effects. We have generated dynamical gauge configurations at three _x000C_ values using two flavors of Kogut-Susskind quarks with a range of masses. These are analyzed with a Wilson valence quark action. Prelimin... | Decay constants; Kogut-Susskind quarks; Wilson quarks; Fat-clover valence quarks | 2000-04 |
| 3 |
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Wu, Yong-Shi; Raikh, Mikhail E. | Role of spin-orbit coupling in the metal-insulator transition in two-dimensional systems | We propose an experiment, which would allow us to pinpoint the role of spin-orbit coupling in the metal-nonmetal transition observed in a number of two-dimensional systems at low densities. Namely, we demonstrate that in a parallel magnetic field the interplay between the spin-orbit coupling and the... | Spin-orbit coupling; Metal-insulator transitions | 2000-04 |
| 4 |
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DeTar, Carleton | Scaling tests of the improved Kogut-Susskind quark action | Improved lattice actions for Kogut-Susskind quarks have been shown to improve rotational symmetry and flavor symmetry. In this work we find improved scaling behavior of the r and nucleon masses expressed in units of a length scale obtained from the static quark potential, and better behavior of the ... | Instantons; Static potential | 2000-04 |
| 5 |
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DeTar, Carleton | Semileptonic decays of heavy mesons with the fat clover action | We are studying a variety of semileptonic decays of heavy-light mesons in an effort to improve the determination of the heavy-quark Standard-Model CKM matrix elements. Our fermion action is a novel, improved "fat" clover action that promises to reduce problems with exceptional configurations. Dynami... | Semileptonic decay; Decay constants; Staggered quarks; Fat-clover valence quarks | 2000-04 |
1 - 25 of 5