1,721,404 research outputs found
Determination of Freeze-out Conditions from Lattice QCD Calculations
No full textKarsch F. Determination of Freeze-out Conditions from Lattice QCD Calculations. Central European Journal of Physics. 2012;10(6):1234-1237.Freeze-out conditions in Heavy Ion Collisions are generally determined bycomparing experimental results for ratios of particle yields with theoreticalpredictions based on applications of the Hadron Resonance Gas model. We discusshere how this model dependent determination of freeze-out parameters mayeventually be replaced by theoretical predictions based on equilibrium QCDthermodynamics
Charge Fluctuations in Lattice QCD with Domain-Wall Fermions
No full textIn this work, we undertook an exploratory study of QCD thermodynamics with domain-wall fermions. This had been studied before but with much smaller lattices and a heavier pion. In this new study, we report on results obtained on much larger volumes and discuss what needs to be done to go even closer to the chiral limit. A second new aspect of our study was the introduction of a chemical potential for the first time in the domain-wall formalism. We measured the lowest-order quark number susceptibilities and found a well-defined, smooth transition in some of these susceptibilities.We also carried out several analytic calculations in the free-field case. One motivation was to understand how these fermions worked, especially with respect to thermodynamic simulations. However another motivation was to understand cutoff effects, which had not been studied before for these fermions.We found that these effects were significant for the free operator. We therefore implemented and tested an improved version of the operator with much smaller discretization errors. In this work, we also present some preliminary results of simulations that show that observables measured using this operator show much smaller cutoff errors.Advisor(s): Frithjof Karsch. Committee Member(s): Jacobus Verbaarschot; Abhay Deshpande; Dominik Schneble; Robert Pisarski.Stony Brook University Libraries. SBU Graduate School in Department of Physics. Lawrence Martin (Dean of Graduate School)
Perspectives for a realistic simulation of QCD
No full textKarsch F. Perspectives for a realistic simulation of QCD. Part.World. 1990;1:74-79
The Chiral phase transition in QCD: Critical exponents and their flavor dependence
No full textKarsch F. The Chiral phase transition in QCD: Critical exponents and their flavor dependence. Nucl.Phys.Proc.Suppl. 1992;26:299-301
New results and long-standing questions in finite temperature QCD
Full text linkKarsch F. New results and long-standing questions in finite temperature QCD. Nuclear Physics, B: Proceedings Supplements. 1994;34:63-77.We review recent results on QCD at finite temperature. In particular we will discuss the chiral phase transition in two flavour QCD and new results on the excitation spectrum in the plasma phase of QCD
A Monte Carlo study of the [beta]-function of the SU(3) Wilson action
Full text linkKarsch F. A Monte Carlo study of the [beta]-function of the SU(3) Wilson action. Nuclear Physics, B. 1985;252(1):189-196.We discuss the behaviour of the [beta]-function of the standard SU(3) Wilson action at intermediate couplings. Results obtained from measuments of the deconfinement temperature and string tension on large lattices are compared with those obtained from a systematically optimized Monte Carlo Renormalization Group metho
APPLICATION OF MONTE CARLO RENORMALIZATION GROUP METHODS IN NONABELIAN LATTICE GAUGE THEORIES
No full textKarsch F. APPLICATION OF MONTE CARLO RENORMALIZATION GROUP METHODS IN NONABELIAN LATTICE GAUGE THEORIES. 1985
Momentum dependence of heavy quark resonance production in heavy ion collisions
No full textKarsch F. Momentum dependence of heavy quark resonance production in heavy ion collisions. 1990
Hot QCD on the lattice
No full textKarsch F. Hot QCD on the lattice. Progress of Theoretical Physics Supplement. 2007;168(168):237-244.We review lattice results that probe properties of high temperature QCD at different length scales and can help to elucidate its non-perturbative structure. We examine the flavor and chemical potential dependence of electric and magnetic screening lengths as well as the QCD equation of state. This emphasizes the subdominant role quark degrees of freedom play in building up the non-perturbative properties of high temperature QCD
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