Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Dieter Hierl"'
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 140:308-310
We report preliminary results for the I=2 pion scattering length a_0, calculated with chirally improved fermions. After chiral extrapolation our results are in good agreement with both, experimental and theoretical predictions.
Poster presented
Poster presented
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbcc02306e7a226da4d2d4a96c899017
https://doi.org/10.1016/j.nuclphysbps.2004.11.324
https://doi.org/10.1016/j.nuclphysbps.2004.11.324
Autor:
Christian Hagen, Dieter Hierl, Vidushi Maillart, Christian Ehmann, Meinulf Göckeler, Christof Gattringer, Ferenc Niedermayer, Stefan Solbrig, T. Maurer, Daniel Mohler, Tommy Burch, Andreas Schäfer, Peter Hasenfratz, Georg P. Engel, Markus Limmer, Christian B. Lang
Publikováno v:
High Performance Computing in Science and Engineering, Garching/Munich 2009 ISBN: 9783642138713
Lattice Quantum Chromodynamics (LQCD) is the most versatile and powerful method to investigate non-perturbative effects in strong interaction physics. In view of the much improved statistical accuracy the control of systematic uncertainties became th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d490823d7d0e9ee071e9e9d478eacb0
https://doi.org/10.1007/978-3-642-13872-0_37
https://doi.org/10.1007/978-3-642-13872-0_37
Autor:
Stefan Solbrig, Thomas Lippert, Nils Meyer, Tilo Wettig, Gianfranco Bilardi, M. Drochner, F. Belletti, Zoltan Fodor, F. Schifano, H. Kaldass, Dieter Hierl, Thomas Streuer, Andrea Nobile, Hubert Simma, T. Maurer, Raffaele Tripiccione, Dirk Pleiter, Andreas Schäfer, N. Eicker
Publikováno v:
Scopus-Elsevier
We evaluate IBM's Enhanced Cell Broadband Engine (BE) as a possible building block of a new generation of lattice QCD machines. The Enhanced Cell BE will provide full support of double-precision floating-point arithmetics, including IEEE-compliant ro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69fc43840d74e9786d683510408572ed
http://arxiv.org/abs/0710.2442
http://arxiv.org/abs/0710.2442
Autor:
Vidushi Maillart, Ferenc Niedermayer, Manuel Weingart, Christof Weiermann, Andreas Schäfer, Dieter Hierl, Peter Hasenfratz
We generated configurations with the approximate fixed-point Dirac operator $D_\mathrm{FP}$ on a $12^4$ lattice with $a \approx 0.13 $fm where the scale was set by $r_0$. The distributions of the low lying eigenvalues in different topological sectors
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f765341901a0d59ee93ab3c9710dd65
http://arxiv.org/abs/0710.0551
http://arxiv.org/abs/0710.0551
Autor:
Andreas Schäfer, Vidushi Maillart, C. Weiermann, M. Weingart, Ferenc Niedermayer, Peter Hasenfratz, Dieter Hierl
We generated configurations with the parametrized fixed-point Dirac operator D_{FP} on a (1.6 fm)^4 box at a lattice spacing a=0.13 fm. We compare the distributions of the three lowest k=1,2,3 eigenvalues in the nu= 0,1,2 topological sectors with tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2dd517c44a9babbe56f95db717579e9
Autor:
Dieter Hierl
Publikováno v:
Proceedings of XXIVth International Symposium on Lattice Field Theory — PoS(LAT2006).
is quite small in our simulation we are in the delta regime for the two lightflavors where the low lying excitations are described by a qua ntum mechanical rotator. From herewe extract the low energy constant F. We also measure the AWI mass and pres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb6d4e7b65dc68e3319ca32416409d80
https://doi.org/10.22323/1.032.0178
https://doi.org/10.22323/1.032.0178
Autor:
Christian Hagen, Dieter Hierl, Andreas Schäfer, Leonid Ya. Glozman, Christof Gattringer, Christian B. Lang, Tommy Burch
We present results for masses of excited baryons from a quenched calculation with Chirally Improved quarks at pion masses down to 350 MeV. Our analysis of the correlators is based on the variational method. In order to provide a large basis set for s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f172424b43aec65a33cfb545d74853f
We report on a study of the pentaquark Theta^+(1540), using a variety of different interpolating fields. We use Chirally Improved fermions in combination with Jacobi smeared quark sources to improve the signal and get reliable results even for small
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a826c591005ed08b31103cde345b7839
https://epub.uni-regensburg.de/1773/
https://epub.uni-regensburg.de/1773/
Autor:
Leonid Ya. Glozman, Dieter Hierl, Christian Hagen, Tommy Burch, Andreas Schäfer, Christian B. Lang, Christof Gattringer
We study baryons on the lattice with a special focus on excited states. For that purpose we construct several interpolators which differ in their Dirac structure. These interpolators are built from Jacobi smeared quarks with different widths in order
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::662ea72bf56b48a14886b4658782bf10
https://epub.uni-regensburg.de/1770/
https://epub.uni-regensburg.de/1770/
We report on a study of the pentaquark Theta^+(1540), using a variety of different interpolating fields. We use Chirally Improved fermions in combination with Jacobi smeared quark sources to improve the signal and get reliable results even for small
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b52c7c08a1501b0fcab55edc95844164
https://epub.uni-regensburg.de/1836/
https://epub.uni-regensburg.de/1836/