Presentation is loading. Please wait.

Presentation is loading. Please wait.

A status report of the QCDSF N f =2+1 Project Yoshifumi Nakamura (NIC/DESY) for the QCDSF collaboration Lattice Regensburg Aug. 3, 2007.

Published by Modified over 8 years ago

Similar presentations

Presentation on theme: "A status report of the QCDSF N f =2+1 Project Yoshifumi Nakamura (NIC/DESY) for the QCDSF collaboration Lattice Regensburg Aug. 3, 2007."— Presentation transcript:

1 A status report of the QCDSF N f =2+1 Project Yoshifumi Nakamura (NIC/DESY) for the QCDSF collaboration Lattice 2007 @ Regensburg Aug. 3, 2007

2 Introduction QCDSF Motivation: QCDSF Collaboration has performed simulations of lattice QCD with 2 flavors of dynamical quarks Real world: 6 flavors (3 light, 3 heavy) We want to deal with u, d and s quark dynamically Expectation: Improve:   the hadron and quark masses   weak matrix element   Moments of generalized distributions   ・ ・ ・ ・ ・ lattice 2007

3 Action QCDSF lattice 2007 Gauge: Improved gauge action Tadpole improved Symanzik glue: decrease O(a 2 ) lattice discretization error (N f =3) HPQCD

4 Action QCDSF Fermion: Clover fermion action with stout links(FLRC) better chiral properties smaller cut-off effects Mild form of UV filtering: lattice 2007 Morningstar & Peardon

5 Algorithm QCDSF Partition function Even odd preconditioning lattice 2007

6 Algorithm QCDSF Multi mass preconditioning We modify action lattice 2007 Hasenbusch Horváth, Kennedy & Sint

7 Algorithm QCDSF Multiple time integration scheme: lattice 2007 3 time scales Sexton & Weingarten Chronological inverter by Minimal Residual Extrapolation: Brower et al., NPB484

8 Algorithm test QCDSF lattice 2007

9 Test QCDSF lattice 2007

10 Partially quenched QCDSF lattice 2007

11 Partially quenched QCDSF lattice 2007

12 Vector meson QCDSF lattice 2007

13 Nucleon QCDSF lattice 2007

14 QCDSF lattice 2007 Our 2+1 flavors action is more continuum like than our 2 flavors

15 Conclusion QCDSF QCDSF 2+1 project started We did good choice for action lattice 2007 Plan: TODO: More elaborate tests Implementing new idea Performance: ~20% of peak @Altix 20-25% of peak @BGL

16 RHMC QCDSF optimal coefficients are found by the Remez algorithm for a given range MC step MD step lattice 2007 Horváth, Kennedy & Sint

Download ppt "A status report of the QCDSF N f =2+1 Project Yoshifumi Nakamura (NIC/DESY) for the QCDSF collaboration Lattice Regensburg Aug. 3, 2007."

Similar presentations

Lecture 1: basics of lattice QCD Peter Petreczky Lattice regularization and gauge symmetry : Wilson gauge action, fermion doubling Different fermion formulations.

Lecture 1: basics of lattice QCD Peter Petreczky Lattice regularization and gauge symmetry : Wilson gauge action, fermion doubling Different fermion formulations.
Dynamical Anisotropic-Clover Lattice Production for Hadronic Physics C. Morningstar, CMU K. Orginos, College W&M J. Dudek, R. Edwards, B. Joo, D. Richards,

Dynamical Anisotropic-Clover Lattice Production for Hadronic Physics C. Morningstar, CMU K. Orginos, College W&M J. Dudek, R. Edwards, B. Joo, D. Richards,
A). Introduction b). Quenched calculations c). Calculations with 2 light dynamical quarks d). (2+1) QCD LATTICE QCD SIMULATIONS, SOME RECENT RESULTS (END.

A). Introduction b). Quenched calculations c). Calculations with 2 light dynamical quarks d). (2+1) QCD LATTICE QCD SIMULATIONS, SOME RECENT RESULTS (END.
P. Vranas, IBM Watson Research Lab 1 Gap domain wall fermions P. Vranas IBM Watson Research Lab.

P. Vranas, IBM Watson Research Lab 1 Gap domain wall fermions P. Vranas IBM Watson Research Lab.
Non-perturbative improvement of nHYP smeared fermions R. Hoffmann In collaboration with A. Hasenfratz and S. Schaefer University of Colorado Peak Peak.

Non-perturbative improvement of nHYP smeared fermions R. Hoffmann In collaboration with A. Hasenfratz and S. Schaefer University of Colorado Peak Peak.
1 Meson correlators of two-flavor QCD in the epsilon-regime Hidenori Fukaya (RIKEN) with S.Aoki, S.Hashimoto, T.Kaneko, H.Matsufuru, J.Noaki, K.Ogawa,

1 Meson correlators of two-flavor QCD in the epsilon-regime Hidenori Fukaya (RIKEN) with S.Aoki, S.Hashimoto, T.Kaneko, H.Matsufuru, J.Noaki, K.Ogawa,
Scaling properties of the chiral phase transition in the low density region of two-flavor QCD with improved Wilson fermions WHOT-QCD Collaboration: S.

Scaling properties of the chiral phase transition in the low density region of two-flavor QCD with improved Wilson fermions WHOT-QCD Collaboration: S.
Lattice QCD (INTRODUCTION) DUBNA WINTER SCHOOL 1-2 FEBRUARY 2005.

Lattice QCD (INTRODUCTION) DUBNA WINTER SCHOOL 1-2 FEBRUARY 2005.
Lattice 2007T.Umeda (Tsukuba)1 Study of constant mode in charmonium correlators at finite temperature Takashi Umeda Lattice 2007, Regensburg, Germany,

Lattice 2007T.Umeda (Tsukuba)1 Study of constant mode in charmonium correlators at finite temperature Takashi Umeda Lattice 2007, Regensburg, Germany,
TQFT 2010T. Umeda (Hiroshima)1 Equation of State in 2+1 flavor QCD with improved Wilson quarks Takashi Umeda (Hiroshima Univ.) for WHOT-QCD Collaboration.

TQFT 2010T. Umeda (Hiroshima)1 Equation of State in 2+1 flavor QCD with improved Wilson quarks Takashi Umeda (Hiroshima Univ.) for WHOT-QCD Collaboration.
JPS autumn 2010T. Umeda (Hiroshima)1 ウィルソンクォークを用いた N f =2+1 QCD の状態方程式の研究 Takashi Umeda (Hiroshima Univ.) for WHOT-QCD Collaboration JPS meeting, Kyushu-koudai,

JPS autumn 2010T. Umeda (Hiroshima)1 ウィルソンクォークを用いた N f =2+1 QCD の状態方程式の研究 Takashi Umeda (Hiroshima Univ.) for WHOT-QCD Collaboration JPS meeting, Kyushu-koudai,
1 Hiroshi Ohki, Tetsuya Onogi (YITP, Kyoto U.) Hideo Matsufuru (KEK) October High precision study of B*Bπ coupling in unquenched QCD.

1 Hiroshi Ohki, Tetsuya Onogi (YITP, Kyoto U.) Hideo Matsufuru (KEK) October High precision study of B*Bπ coupling in unquenched QCD.
Scadron70 page 1 Lattice Calculation: Caveats and Challenges What lattice can and cannot do What lattice can and cannot do Caveats of calculating meson.

Scadron70 page 1 Lattice Calculation: Caveats and Challenges What lattice can and cannot do What lattice can and cannot do Caveats of calculating meson.
Weak Charm Decays with Lattice QCD Weak Charm Decays with Lattice QCD Aida X. El-Khadra University of Illinois Charm 2007 workshop, Aug. 5-8, 2007.

Weak Charm Decays with Lattice QCD Weak Charm Decays with Lattice QCD Aida X. El-Khadra University of Illinois Charm 2007 workshop, Aug. 5-8, 2007.
Lattice 07, Regensburg, 1 Magnetic Moment of Vector Mesons in Background Field Method Structure of vector mesons Background field method Some results x.

Lattice 07, Regensburg, 1 Magnetic Moment of Vector Mesons in Background Field Method Structure of vector mesons Background field method Some results x.
1 Lattice QCD Now and in > 5 Years Aida X. El-Khadra (UIUC) Beauty 2003, Oct 14-18, 2003.

1 Lattice QCD Now and in > 5 Years Aida X. El-Khadra (UIUC) Beauty 2003, Oct 14-18, 2003.
Toward an Improved Determination of Tc with 2+1 Flavors of Asqtad Fermions C. DeTar University of Utah The HotQCD Collaboration July 30, 2007.

Toward an Improved Determination of Tc with 2+1 Flavors of Asqtad Fermions C. DeTar University of Utah The HotQCD Collaboration July 30, 2007.
Huey-Wen Lin — Parameter Tuning of Three-Flavor Dynamical Anisotropic Clover Action Huey-Wen Lin Robert G. Edwards Balint Joó Lattice.

Huey-Wen Lin — Parameter Tuning of Three-Flavor Dynamical Anisotropic Clover Action Huey-Wen Lin Robert G. Edwards Balint Joó Lattice.
The N to Delta transition form factors from Lattice QCD Antonios Tsapalis University of Athens, IASA EINN05, Milos, 21-9-2005.

The N to Delta transition form factors from Lattice QCD Antonios Tsapalis University of Athens, IASA EINN05, Milos,
1 Thermodynamics of two-flavor lattice QCD with an improved Wilson quark action at non-zero temperature and density Yu Maezawa (Univ. of Tokyo) In collaboration.

1 Thermodynamics of two-flavor lattice QCD with an improved Wilson quark action at non-zero temperature and density Yu Maezawa (Univ. of Tokyo) In collaboration.

Similar presentations

Ads by Google