Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Irving, Alan C."'
Publikováno v:
Phys. Rev. D 86, 014504 (2012)
We report on a high statistics lattice QCD calculation of the mass of the eta and eta' mesons using ASQTAD improved staggered fermions. The calculation used two ensembles with different lattice spacings and pion masses. We also report results for eta
Externí odkaz:
http://arxiv.org/abs/1112.4384
Publikováno v:
Phys.Rev.D82:034501,2010
We present the first 2+1 flavour spectrum measurements of glueball states using high statistics simulations with improved staggered fermions. We find a spectrum consistent with quenched measurements of scalar, pseudoscalar andtensor glueball states.
Externí odkaz:
http://arxiv.org/abs/1005.2473
Publikováno v:
Phys.Rev.D77:065019,2008
We present the first 2+1 flavour lattice QCD calculations of pseudoscalar flavour-singlet propagators using improved staggered fermions. We explore the relevant techniques and discuss prospects for the larger scale studies now in progress. The discon
Externí odkaz:
http://arxiv.org/abs/0709.4224
Publikováno v:
PoSLAT2006:176,2006
The Asqtad improved staggered fermion formalism has been a valuable tool in successfully calculating the non-singlet parts of the hadronic spectrum. We are engaged in a project to calculate the spectrum of the pseudoscalar singlet mesons with 2+1-fla
Externí odkaz:
http://arxiv.org/abs/hep-lat/0610044
Publikováno v:
PoS LAT2005 (2005) 042
We look for the effect of open decay channels on the masses of baryons in unquenched lattice QCD. We apply variational smearing using fuzzed basis states to a staggered nucleon operator. The signal for the s_bar s current in the nucleon is studied. T
Externí odkaz:
http://arxiv.org/abs/hep-lat/0511048
Publikováno v:
PoS LAT2005 (2005) 027
We present results of an exploratory study of singlet scalar states in unquenched QCD using both glueball and meson operators. Results for non-singlet non-strange scalar mesons are also presented. We use Asqtad improved staggered fermions and gauge c
Externí odkaz:
http://arxiv.org/abs/hep-lat/0510066
Publikováno v:
PoS LAT2005 (2005) 083
We report on progress in measuring disconnected correlators associated with pseudoscalar flavor-singlet mesons. This will eventually allow us to compute the masses of the eta and eta' mesons. Flavor-singlet physics also presents an interesting test o
Externí odkaz:
http://arxiv.org/abs/hep-lat/0509193
Autor:
Irving, Alan C., Collaboration, UKQCD
Publikováno v:
Nucl.Phys.Proc.Suppl. 94 (2001) 242-245
We present results for QCD with 2 degenerate flavours of quark using a non-perturbatively improved action on a lattice volume of $16^3\times32$ where the bare gauge coupling and bare dynamical quark mass have been chosen to maintain a fixed physical
Externí odkaz:
http://arxiv.org/abs/hep-lat/0010012
Autor:
Joo, Balint, Pendleton, Brian, Kennedy, Anthony D., Irving, Alan C., Sexton, James C., Pickles, Stephen M., Booth, Stephen P., Collaboration, UKQCD
Publikováno v:
Phys.Rev. D62 (2000) 114501
We investigate instability and reversibility within Hybrid Monte Carlo simulations using a non-perturbatively improved Wilson action. We demonstrate the onset of instability as tolerance parameters and molecular dynamics step sizes are varied. We com
Externí odkaz:
http://arxiv.org/abs/hep-lat/0005023
Autor:
Joo, Balint, Irving, Alan C, Sexton, James C., Pendleton, Brian, Pickles, Stephen M, Sroczynski, Zbigniew, Collaboration, UKQCD
Publikováno v:
Phys.Rev. D59 (1999) 114501
We present details of our investigation of the Parallel Tempering algorithm. We consider the application of action matching technology to the selection of parameters. We then present a simple model of the autocorrelations for a particular parallel te
Externí odkaz:
http://arxiv.org/abs/hep-lat/9810032