Olaf Kaczmarek

QCD thermal phase transition in the presence of a small chemical potential

We propose a new method to investigate the thermal properties of QCD with a small quark chemical potential mu. Derivatives of quark and gluonic observables with respect to mu are computed at mu=0 for two flavors of p4 improved staggered fermions with ma=0.1,0.2 on a 16(3)x4 lattice, and used to calculate the leading order Taylor expansion in mu of the location of the pseudocritical point about mu=0. This expansion should be well behaved for the small values of mu(q)/T(c)similar to0.1 relevant for BNL RHIC phenomenology, and predicts a critical curve T-c(mu) in reasonable agreement with estimates obtained using exact reweighting. In addition, we contrast the case of isoscalar and isovector chemical potentials, quantify the effect of munot equal0 on the equation of state, and comment on the complex phase of the fermion determinant in QCD with munot equal0.

Heavy quarkonium physics

This report is the result of the collaboration and research effort of the Quarkonium Working Group over the last three years. It provides a comprehensive overview of the state of the art in heavy-quarkonium theory and experiment, covering quarkonium spectroscopy, decay, and production, the determination of QCD parameters from quarkonium observables, quarkonia in media, and the effects on quarkonia of physics beyond the Standard Model. An introduction to common theoretical and experimental tools is included. Future opportunities for research in quarkonium physics are also discussed.

Equation of state for two flavor QCD at nonzero chemical potential

We present results of a simulation of QCD on a

Thermodynamics of two flavor QCD to sixth order in quark chemical potential

{16}^{3}\ifmmode\times\else\texttimes\fi{}4

The transition temperature in QCD

lattice with 2 continuum flavors of a

Heavy quark-antiquark free energy and the renormalized Polyakov loop

p4

Baryon Number, Strangeness and Electric Charge Fluctuations in QCD at High Temperature

-improved staggered fermion with mass

Equation of State for physical quark masses

m/T=0.4.

Phase boundary for the chiral transition in (2+1) -flavor QCD at small values of the chemical potential

Derivatives of the thermodynamic grand potential

Thermal dilepton rate and electrical conductivity: An analysis of vector current correlation functions in quenched lattice QCD

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