Zobrazeno 1 - 10
of 98
pro vyhledávání: '"I. Wetzorke"'
Autor:
N. Ukita, F. Farchioni, Gernot Münster, P. Hofmann, Urs Wenger, Istvan Montvay, Mauro Papinutto, K. Jansen, I. Wetzorke, Andrea Shindler, Luigi Scorzato, Enno E. Scholz, Carsten Urbach
Publikováno v:
Nuclear Physics B-Proceedings Supplements
By employing a twisted mass term, we compare recent results from lattice calculations of Nf=2 dynamical Wilson fermions with Wilson Chiral Perturbation Theory (WChPT). The final goal is to determine some combinations of Gasser-Leutwyler Low Energy Co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4ffb02c673b2a7506b28213f6a20043
https://doi.org/10.1016/j.nuclphysbps.2006.01.035
https://doi.org/10.1016/j.nuclphysbps.2006.01.035
Autor:
Ulli Wolff, Michele Della Morte, F. Knechtli, Rainer Sommer, Roland Hoffmann, J. Rolf, I. Wetzorke
Publikováno v:
Nuclear Physics B. 729:117-134
The running of renormalized quark masses is computed in lattice QCD with two flavors of massless O(a) improved Wilson quarks. The regularization and flavor independent factor that relates running quark masses to the renormalization group invariant on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84a716ae82704cd0ca9264b318e19662
https://doi.org/10.1016/j.nuclphysb.2005.09.028
https://doi.org/10.1016/j.nuclphysb.2005.09.028
Autor:
Luigi Scorzato, Federico Farchioni, Karl Jansen, E.E. Scholz, I. Wetzorke, A. Shindler, Istvan Montvay, N. Ukita, Carsten Urbach
Publikováno v:
The European Physical Journal C. 42:73-87
The effect of changing the lattice action for the gluon field on the recently observed [1] first order phase transition near zero quark mass is investigated by replacing the Wilson plaquette action by the DBW2 action. The lattice action for quarks is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0292d18e02c34e4c73bd2b45e24ab7cf
https://doi.org/10.1140/epjc/s2005-02262-5
https://doi.org/10.1140/epjc/s2005-02262-5
Autor:
F. Farchioni, I. Wetzorke, Giancarlo Rossi, Enno E. Scholz, N. Ukita, Carsten Urbach, R. Frezzotti, Istvan Montvay, Karl Jansen, Andrea Shindler
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 140:240-245
The phase structure of zero temperature twisted mass lattice QCD is investigated. We find strong metastabilities in the plaquette observable when the untwisted quark mass sweeps across zero.
Comment: Talks presented at Lattice2004(spectrum), 6 p
Comment: Talks presented at Lattice2004(spectrum), 6 p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc2f5e1fc37557486c2fd1364e63598d
https://doi.org/10.1016/j.nuclphysbps.2004.11.132
https://doi.org/10.1016/j.nuclphysbps.2004.11.132
Publikováno v:
Nuclear Physics B. 664:276-298
We discuss the usage of continuous external momenta for computing renormalization factors as needed to renormalize operator matrix elements. These kind of external momenta are encoded in special boundary conditions for the fermion fields. The method
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec52074ca20257bba22b719c0dfe9654
https://doi.org/10.1016/s0550-3213(03)00394-8
https://doi.org/10.1016/s0550-3213(03)00394-8
Publikováno v:
Nuclear Physics A. 698:400-403
We investigate medium effects in QCD like chromoelectric screening and quasi-particle mass generation by calculating the heavy quark potential as well as the temporal quark and gluon Coulomb gauge propagators in quenched approximation.
To appear
To appear
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39055e06a5f4fc243fa35ac2028743f7
https://doi.org/10.1016/s0375-9474(01)01389-6
https://doi.org/10.1016/s0375-9474(01)01389-6
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 140:393-395
We report on recent results for the pion and nucleon matrix element of the twist-2 operator corresponding to the average momentum of non-singlet quark densities. We discuss finite size effects for the nucleon matrix element and present first prelimin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c96edecec059cfb64ec82fa7dff9d8e
https://doi.org/10.1016/j.nuclphysbps.2004.11.137
https://doi.org/10.1016/j.nuclphysbps.2004.11.137
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 140:746-748
We present a scaling test of twisted mass QCD with pure Wilson quarks for a twisting angle of π / 2 for a range of pseudoscalar masses 250 MeV ≲ m PS ≲ 1 GeV . We have computed the vector meson mass and the pseudoscalar decay constant fPS for di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab573f00e28b3c090d88e0c3fa7bb525
https://doi.org/10.1016/j.nuclphysbps.2004.11.124
https://doi.org/10.1016/j.nuclphysbps.2004.11.124
Publikováno v:
Nuclear Physics B - Proceedings Supplements. :814-816
We present an algorithmic study for the simulation of two massless flavors of O(a) improved Wilson quarks with Schroedinger functional boundary conditions. The algorithm used is Hybrid Monte Carlo with two pseudo-fermion fields as proposed by M. Hase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::425e402fc89547aea848cc626466239c
https://doi.org/10.1016/s0920-5632(03)02721-x
https://doi.org/10.1016/s0920-5632(03)02721-x
Publikováno v:
Nuclear Physics B - Proceedings Supplements. :278-280
We compute non-perturbatively the evolution of the twist-2 operators corresponding to the average momentum of non-singlet quark densities. The calculation is based on a finite-size technique, using the Schr\"odinger Functional, in quenched QCD. We fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0bb01a9534c8fc793d35bfc5209396ee
https://doi.org/10.1016/s0920-5632(03)02555-6
https://doi.org/10.1016/s0920-5632(03)02555-6