Lattice quantum shromodynamics with dynamical fermions  Page description

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Details of project

  
Identifier
37615
Type K
Principal investigator Fodor, Zoltán
Title in Hungarian Kvantumszíndinamika téridő rácson dinamikus fermionokkal
Title in English Lattice quantum shromodynamics with dynamical fermions
Panel Physics 1
Department or equivalent Department of Theoretical Physics (Eötvös Loránd University)
Participants Csikor, Ferenc
Katz, Sándor
Starting date 2002-01-01
Closing date 2005-12-31
Funding (in million HUF) 14.430
FTE (full time equivalent) 0.00
state closed project





 

Final report

  
Results in Hungarian
2002 és 2005 között kidolgoztuk a véges kémiai potenciál mellett alkalmazható átfedést javító multiparaméteres átsúlyozás módszerét, melyet dinamikus kvarkszimulációkra alkalmaztunk. Meghatároztuk nemeltűnő barionsűrűség mellett a fázisdiagrammot és az állapotegyenletet. Vizsgáltuk zérus kémiai potenciálon az állapotegyenlet kontinuum limesz extrapolációját. A számoláshoz javított hatást használtunk dinamikus kvarkokkal. Meghatároztuk az öt kvarkot tartalmazó állapotok spektrumát. Az általunk vizsgált kvarktömegek és rácsállandó mellett kizártuk a theta pentakvark létezését. Vizsgáltuk a Z-robbanás mechanizmusát. Jóslatot adtunk erősen kölcsönható neutrínó forgatókönyvre. Meghatároztuk a kozmogenikus neutrínó fluxus alsó és a neutrínó-nukleon hatáskeresztmetszet felső korlátját.
Results in English
Between 2002 and 2005 we introduced the overlap improving multi-parameter reweighting technique. This method is suitable to study non-vanishing chemical potentials. We applied the technique for dynamical quark simulations. For non-vanishing baryonic densities we determined the phase diagram and the equation of state. We studied the continuum extrapolation of the equation of state for vanishing chemical potentials. We used improved action with dynamical quarks. We determined the spectrum of five-quark states. For our quark masses and lattice spacing we excluded the existence of the theta pentaquark. We studied the Z-burst mechanism. We predicted the consequences of a strongly interacting neutrino scenario. We determined the lower bound for the cosmogenic neutrino flux and the upper bound for the neutrino-nucleon cross section.
Full text http://real.mtak.hu/278/
Decision
Yes





 

List of publications

  
Fodor Z; Katz SD; Ringwald A; Tu H: STRONG NEUTRINO NUCLEON INTERACTIONS AT ULTRAHIGH-ENERGIES AS A SOLUTION TO THE GZK PUZZLE, 10th Marcel Grossmann Meeting on Recent Developments in Theor Exp General Relativity, Gravitation Relativistic Field Theories (MG X MMIII), Rio de Janeiro, Brazil, 21pp, 2003
Fodor Z; Katz SD; Szabó KK; Tóth AI: GRAND CANONICAL POTENTIAL FOR A STATIC QUARK-ANTI-QUARK PAIR AT MU DOES NOT EQUAL 0, Nucl. Phys. Proc. Suppl. 140:508-510, 2005
Anchordoqui LA; Fodor Z; Katz SD, Ringwald A; Tu H: UPPER BOUNDS ON THE NEUTRINO-NUCLEON INELASTIC CROSS SECTION, JCAP 0506:013, 2005
Fodor Z; Katz SD; Szabó KK: DYNAMICAL OVERLAP FERMIONS, RESULTS WITH HMC ALGORITHM, Nucl. Phys. Proc. Suppl. 140:704-706, 2005
Csikor F; Fodor Z; Katz SD; Kovács TG: THE STATUS OF PENTAQUARK SPECTROSCOPY ON THE LATTICE, Based on talks the authors gave at various conferences. 13pp, 2004
Fodor Z; Katz SD: CRITICAL POINT OF QCD AT FINITE T AND MU, LATTICE RESULTS FOR PHYSICAL QUARK MASSES, JHEP 04;050-060, 2004
Fodor Z; Katz SD: FINITE T / MU LATTICE QCD AND THE CRITICAL POINT, Prog. Theor. Phys. Suppl. 153:86-92, 2004
Fodor Z; Katz SD; Szabó KK: THE QCD EQUATION OF STATE AT NONZERO DENSITIES: LATTICE RESULT, Phys. Lett. B568:73-77, 2003
Csikor F; Egri GI; FodorZ; Katz SD; Szabó KK; Tóth AI: THE QCD EQUATION OF STATE AT FINITE T / MU ON THE LATTICE, Prog. Theor. Phys. Suppl. 153:93-105, 2004
Csikor F; Egri GI; Fodor Z; Katz SD; Szabó KK; Tóth AI: EQUATION OF STATE AT FINITE TEMPERATURE AND CHEMICAL POTENTIAL, LATTICE QCD RESULTS, JHEP 05:046-073, 2004
Fodor Z; Katz SD; Szabó KK: DYNAMICAL OVERLAP FERMIONS, RESULTS WITH HYBRID MONTE CARLO ALGORITHM, JHEP 08:003-015, 2004
Fodor Z; Katz SD; Ringwald A; Tu H: STRONGLY INTERACTING NEUTRINOS AS THE HIGHEST ENERGY COSMIC RAYS, Tegernsee 2003, Beyond the Desert (BEYOND 03), 857-866, 2003
Fodor Z; Katz SD; Ringwald A; Tu H: BOUNDS ON THE COSMOGENIC NEUTRINO FLUX, JCAP 03:015-28, 2003
Csikor F; Fodor Z; Katz SD; Kovács TG: PENTAQUARK HADRONS FROM LATTICE QCD, JHEP 0311:070-083, 2003
Fodor Z; Katz SD; Ringwald A; Tu H: ELECTROWEAK INSTANTONS AS A SOLUTION TO THE ULTRAHIGH-ENERGY COSMIC RAY PUZZLE, Phys. Lett. B561:191-201, 2003
Fodor Z; Katz SD: LATTICE QCD RESULTS AT FINITE T AND MU, Heavy Ion Phys. 18:41-48, 2003
Fodor Z; Katz SD: A NEW METHOD TO STUDY LATTICE QCD AT FINITE TEMPERATURE AND CHEMICAL POTENTIAL, Phys. Lett. B534 87-92, 2002
Fodor Z; Katz SD: LATTICE DETERMINATION OF THE CRITICAL POINT OF QCD AT FINITE T AND mu, JHEP 03 014-018, 2002
Fodor Z; Katz SD; Papp G: BETTER THAN $1/MPLOPS SUSTAINED: A SCALABLE PC-BASED PARALLEL COMPUTER FOR LATTICE QCD, Comp. Phys. Com. 152: 121-134, 2003
Fodor Z; Katz SD; Papp G: A SCALABLE PC BASED PARALLEL COMPUTER FOR LATTICE QCD, Nucl. Phys. Proc. Suppl. 119 1035-1037, 2003
Csikor F; Egri GI; Fodor Z; Katz SD; Szabó KK; Tóth AI: THE QCD EQUATION OF STATE AT FINITE T AND MU, Nucl. Phys. Proc. Suppl. 119 547-549, 2003
Csikor F; Egri GI; Fodor Z; Katz SD; Szabó KK; Tóth AI: LATTICE QCD AT NONVANISHING DENSITY: PHASE DIAGRAM, EQUATION OF STATE, Contributed to Workshop on Strong and Electroweak Matter (SEWM 2002), Heidelberg, Germany, 2-5 Oct 2002 e-Print Archive: hep-lat/0301027, 2002
Fodor Z; Katz SD; Ringwald A: RELIC NEUTRINO MASSES AND THE HIGHEST ENERGY COSMIC RAYS, JHEP 06 046-065, 2002
Fodor Z: CLUSTERING, GUT SCALE AND NEUTRINO MASSES IN ULTRAHIGH-ENERGY COSMIC RAYS, Cape Town 2002, Dark matter in astro- and particle physics 585-596, 2002
Fodor Z; Katz SD; Ringwald A: Z BURST SCENARIO FOR THE HIGHEST ENERGY COSMIC RAYS, Beyond the Desert 02, Oulu, 567-587, 2002
Fodor Z: ULTRAHIGH-ENERGY COSMIC RAYS: CLUSTERING, GUT SCALE AND NEUTRINO MASSES, Heidelberg 2002: Current problems in particle theory, 2002
Csikor F,Fodor Z, Katz SD, Kovacs TG: PENTAQUARK HADRONS FROM LATTICE QCD, Int. J. Mod. Phys. A20 4562-4572, 2005
Csikor F,Fodor Z, Katz SD, Kovacs TG: EXOTIC BARYONS ON THE LATTICE, Acta Phys. Pol. B36 2271-2282, 2005
Csikor F,Fodor Z, Katz SD, Kovacs TG, Toth BC: COMPREHENSIVE SEARCH FOR THE THETA+ PENTAQUARK ON THE LATTICE, Phys. Rev. D, accepted for publication, 2005
Egri GI, Fodor Z, Katz SD, Szabo KG: TOPOLOGY WITH DYNAMICAL OVERLAP FERMIONS, JHEP 0601: 049, 2006
Aoki Y, Fodor Z, Katz SD, Szabo KG: THE EQUATION OF STATE IN LATTICE QCD: WITH PHYSICAL MASSES TOWARDS THE CONTINUUM LIMIT, JHEP 0601: 089, 2006



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