Physics Plans and Machines in Germany Major Collaborations and - PowerPoint PPT Presentation

Physics Plans and Machines in Germany Major Collaborations and places in Germany: • BMW: J¨ ulich, Wuppertal • CLS: Berlin, Mainz, M¨ unster, Zeuthen • ETMC: Berlin, Hamburg, M¨ unster, Zeuthen • QCDSF: Berlin, Hamburg, Leipzig, M¨ unchen, Regensburg, Zeuthen • RBG: Darmstadt, Bielefeld

Physics • BMW: – Thermodynamics (Wuppertal and Budapest) – T=0 Physics (Budapest-Marseille-Wuppertal) • CLS – K-, charm- and B-physics – fundamental parameters – Muon anomalous magnetic moment – Hadron form factors • QCDSF and ETMC: very similar and broad physics plans, e.g. – Structure functions, form factors and generalised parton distribution functions of baryons and mesons – Distribution Amplitudes of baryons and mesons – Disconnect contributions – Muon anomalous magnetic moment – Resonances – Hadron mass spectrum, decay constants, quark masses, running coupling • RBC-Bielefeld-GSI: – Non-zero temperature and density – Equation of State

Some results from Germany 2000 O X * 1500 S * X M[MeV] D S L 1000 N K* r experiment 500 K width QCD p 0 2.4 3/2 φ RGI r 0 2.2 3/2 F B s m B s 1/2 / C B s r 0 2 3/2 F PS m PS 1/2 / C PS r 0 1.8 1.6 1.4 1.2 1 0.8 0.6 0 0.05 0.1 0.15 0.2 0.25 0.3 1/(r 0 m PS )

Simulation Plans Action: Symanzik improved gauge BMW stout improved N f = 2 + 1 staggered and (clover) Wilson Parameters a � 0.065fm, m π � 190 MeV QCDSF Action: N f = 2 NP-Clover m π = 138MeV, a ≈ 0 . 075 fm, V = 64 3 96 Parameters: Plan: N f = 2 + 1 SLiNC m π = 230MeV, a = 0 . 08 fm, V = 64 3 96 , SU(3) point Parameters: Configurations: all ensembles uploaded Action: N f = 2 + 1 + 1 , maximally tmQCD, Iwasaki gauge ETMC Parameters: a = 0 . 05 − 0 . 10 fm, L ≈ 3 . 0 fm, 150 < m π < 400 MeV Configurations: all ensembles uploaded CLS Action: N f = 2 , NP O(a)-improved Parameters: a = 0 . 04 − 0 . 08 fm, L � 4 . 0 fm, m π � 200 MeV Action: asqtad and p4 RBG Parameters: N τ = 6 , 8 , 12 , m π ≈ 150 MeV and m π ≈ 220 MeV

Supercomputer Infrastructure • NIC 72 racks of BG/P System at FZ-J¨ ulich 1 Petaflops • 4416 Nehalem processor Cluster computer: 208 Teraflops • Altix System at LRZ Munic 62 Teraflops • SGI Altix ICE 8200 at HLRN (Berlin, Hannover) 241 Teraflops • QPACE 4+4 Racks in J¨ ulich und Wuppertal 2000 PowerXCell 8i nodes 200 TFlops • University machines, e.g. University of Mainz: 280 nodes Dual Quadcore AMD Barcelona + Infiniband, 21 TFlops

ILDG Enthusiasm Collaboration ILDG BMW open CLS open ETMC YES QCDSF YES RBG open