Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Eric Brittain Gregory"'
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 153:139-145
Because the propagators of flavor-singlet states incorporate disconnected diagrams, they are uniquely sensitive to any differences in the actions governing sea and valence fermions on the lattice. As such, they present an important test of the validi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f297a77d7228fab67f8e3b081ebea1ae
https://doi.org/10.1016/j.nuclphysbps.2006.01.021
https://doi.org/10.1016/j.nuclphysbps.2006.01.021
Publikováno v:
Chinese Physics Letters. 19:636-639
We present the results for π, ρ, proton and Δ masses from our recently built Pentium cluster and compare with the quenched Wilson fermion data presented by MILC and GF11 collaborations [Nucl. Phys. B (Proc. Suppl.) 60A (1998) 3, Nucl. Phys. B 430
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57e1d7f5e87b82f5086fe80daf3370b0
https://doi.org/10.1088/0256-307x/19/5/309
https://doi.org/10.1088/0256-307x/19/5/309
Autor:
Eric Brittain Gregory, Simon Catterall
Publikováno v:
Physics Letters B. 487:349-356
We report on a study of the supersymmetric anharmonic oscillator computed using a euclidean lattice path integral. Our numerical work utilizes a Fourier accelerated hybrid Monte Carlo scheme to sample the path integral. Using this we are able to meas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7472b78ebbec0a602c8546d92a7ff23
https://doi.org/10.1016/s0370-2693(00)00835-2
https://doi.org/10.1016/s0370-2693(00)00835-2
Autor:
Christopher Alan Aubin, P. B. Mackenzie, Urs M. Heller, D. Toussaint, J. N. Simone, Steven Gottlieb, M. Di Pierro, D. Menscher, Aida X El-Khadra, Eric Brittain Gregory, H. Trottier, M. Okamoto, M. B. Oktay, Jim Hetrick, A. S. Kronfeld, Robert L. Sugar, James C. Osborn, M. Nobes, Claude Bernard, Carleton E. DeTar
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 140:461-463
We present results for form factors of semileptonic decays of $D$ and $B$ mesons in 2+1 flavor lattice QCD using the MILC gauge configurations. With an improved staggered action for light quarks, we successfully reduce the systematic error from the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::414c160980a12620bbd2feda3547e4e4
https://doi.org/10.1016/j.nuclphysbps.2004.11.151
https://doi.org/10.1016/j.nuclphysbps.2004.11.151
Autor:
Carleton E. DeTar, Doug Toussaint, Claude Bernard, Urs M. Heller, T. Burch, Eric Brittain Gregory, Thomas DeGrand, Robert L. Sugar, James C. Osborn, Steven Gottlieb
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 119:257-259
Preliminary results from simulations with 2+1 dynamical quark flavors at a lattice spacing of 0.09 fm are combined with earlier results at a=0.13 fm. We examine the approach to the continuum limit and investigate the dependence of the pseudoscalar ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dddd628b47cd1a52d3ad148cb188c0d3
https://doi.org/10.1016/s0920-5632(03)01519-6
https://doi.org/10.1016/s0920-5632(03)01519-6
Autor:
James Edward Hetrick, Doug Toussaint, Thomas DeGrand, Robert L. Sugar, Claude Bernard, Urs M. Heller, Carleton DeTar, James C. Osborn, Anna Hasenfratz, T. Burch, Eric Brittain Gregory, Steven Gottlieb
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 119:991-993
As a test of the chiral properties of the improved Asqtad (staggered fermion) action, we have been measuring the topological susceptibility as a function of quark masses for 2 + 1 dynamical flavors. We report preliminary results, which show reasonabl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5aa32260160ab1b096d255f81e4b8ca8
https://doi.org/10.1016/s0920-5632(03)01740-7
https://doi.org/10.1016/s0920-5632(03)01740-7
Autor:
S. Gottlieb, Thomas DeGrand, Robert L. Sugar, D. Toussaint, Urs M. Heller, James Edward Hetrick, Anna Hasenfratz, Claude Bernard, T. Burch, Eric Brittain Gregory, Carleton DeTar, James C. Osborn
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 119:769-771
We present a comparison of two highly optimized methods for extracting the topological charge density of a lattice based on smoothing away non-topological fluctuations. The methods are Improved Cooling and Hypercubic Smearing. We find that while the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7bb04d46d546ec1c2896dbf21b3c12c
https://doi.org/10.1016/s0920-5632(03)80463-2
https://doi.org/10.1016/s0920-5632(03)80463-2
Autor:
T. Burch, Steven Gottlieb, Urs M. Heller, Eric Brittain Gregory, Robert L. Sugar, James C. Osborn, Doug Toussaint, Claude Bernard, Carleton DeTar
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 119:260-262
We summarize our measurement of the mass of the exotic $1^{-+}$ hybrid meson using an improved Kogut-Susskind action. We show results from both quenched and dynamical quark simulations and compare with results from Wilson quarks. Extrapolation of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22056895701771bfdc00fd7335d549f0
https://doi.org/10.1016/s0920-5632(03)01520-2
https://doi.org/10.1016/s0920-5632(03)01520-2
Publikováno v:
Physical Review D. 86
We report on a high statistics lattice QCD calculation of the mass of the $\ensuremath{\eta}$ and ${\ensuremath{\eta}}^{\ensuremath{'}}$ mesons using ASQTAD improved staggered fermions. The calculation used two ensembles with different lattice spacin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54945bd7938e2b4620d305d31165f439
https://doi.org/10.1103/physrevd.86.014504
https://doi.org/10.1103/physrevd.86.014504
Publikováno v:
Nuclear Physics B - Proceedings Supplements. :1046-1048
We describe the construction of a high performance parallel computer composed of PC components, as well as the performance test in lattice QCD.
Comment: Lattice 2001 (Algorithms and Machines) 3 pages
Comment: Lattice 2001 (Algorithms and Machines) 3 pages
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::373687520ed83706141f55ab64fb182b
https://doi.org/10.1016/s0920-5632(01)01923-5
https://doi.org/10.1016/s0920-5632(01)01923-5