Color singlet and adjoint free energy at finite temperature (2008)
Bazavov, Alexei, Petreczky, Peter, Velytsky, Alexander
We study correlation functions of static quark-antiquark pairs in SU(2) gauge theory at finite temperature. By measuring Polyakov loop correlators and temporal Wilson loops with APE smearing of...
Zero mode contribution in quarkonium correlators and in-medium properties of heavy quarks (2008)
Datta, Saumen, Petreczky, Peter
We calculate the low energy contribution to quarkonium correlators in Euclidean time in lattice QCD. This contribution was found to give the dominant source of the temperature dependence of the...
Static quark-antiquark pairs at finite temperature (2008)
Brambilla, Nora, Ghiglieri, Jacopo, Petreczky, Peter, Vairo, Antonio
In a framework that makes close contact with modern effective field theories for non-relativistic bound states at zero temperature, we study the real-time evolution of a static quark-antiquark pair...
Properties of quark gluon plasma from lattice calculations (2007)
I discuss lattice QCD calculations of the properties of strongly interacting matter at finite temperature, including the determination of the transition temperature Tc, equation of state, different...
Describing Charmonium Correlation Functions in Euclidean Time (2007)
Mocsy, Agnes, Petreczky, Peter
We present a detailed investigation of the quark mass-dependence of charmonium correlators in Euclidean-time obtained using a potential model, as well as the comparison with results on isotropic...
Quarkonium correlators at finite temperature and potential models (2007)
Mocsy, Agnes, Petreczky, Peter
We discuss the calculations of quarkonium spectral functions in potential models and their implications for the interpretation of the lattice data on quarkonium correlators. In particular, we find...
Predictions for Quarkonia Dissociation (2007)
Mocsy, Agnes, Petreczky, Peter
We predict the upper bound on the dissociation temperatures of different quarkonium states.
Color Screening Melts Quarkonium (2007)
Mocsy, Agnes, Petreczky, Peter
We calculate quarkonium spectral functions in a quark-gluon plasma using a potential model based on full QCD lattice calculations of the free energy of static quark-antiquark pair. We estimate the...
Can quarkonia survive deconfinement ? (2007)
Mocsy, Agnes, Petreczky, Peter
We study quarkonium correlators and spectral functions at zero and finite temperature in QCD with only heavy quarks using potential models combined with perturbative QCD. First, we show that this...
Ground State Quarkonium Spectral Functions Above Deconfinement (2006)
Mocsy, Agnes, Petreczky, Peter, Casalderrey-Solana, Jorge
We discuss the temperature-dependence of S-wave quarkonium spectral functions in a nonrelativistic Green's function approach and compare these to lattice QCD results.
Progress in lattice QCD at finite temperature (2006)
I review current status of lattice QCD calculations of the deconfining transition at finite temperature and quarkonia spectral functions.
Quarkonia correlators and spectral functions from lattice QCD (2006)
I discuss recent progress in calculating quarkonia correlators and spectral functions on the lattice in relation with the problem of quarkonia dissolution at high temperatures and heavy quark...
S-Wave Quarkonia in Potential Models (2006)
Mocsy, Agnes, Petreczky, Peter
We discuss S-wave quarkonia correlators and spectral function using the Wong-potential, and show that these do not agree with the lattice results.
Quarkonia Correlators Above Deconfinement (2005)
Mocsy, Agnes, Petreczky, Peter
We study the quarkonia correlators above deconfinement using the potential model with screened temperature-dependent potentials. We find that while the qualitative features of the spectral functions,...
Heavy Quark Diffusion from the Lattice (2005)
Petreczky, Peter, Teaney, Derek
We study the diffusion of heavy quarks in the Quark Gluon Plasma using the Langevin equations of motion and estimate the contribution of the transport peak to the Euclidean current-current...
Heavy Quarkonia Survival in Potential Model (2004)
Mocsy, Agnes, Petreczky, Peter
We investigate the quarkonia correlators in QCD with no light quarks within a potential model with different screened potentials. Our results for the temperature dependence of the charmonium and...
Charmonia at finite momenta in a deconfined plasma (2004)
Datta, Saumen, Karsch, Frithjof, Petreczky, Peter, Wissel, Soenke, Wetzorke, Ines
Lattice studies of charmonium systems have indicated that in a deconfined gluonic plasma ground state charmonia survive as bound states upto temperatures \~ 2 Tc. After surveying the methodologies...
Charmonium systems after the deconfinement transition (2004)
Datta, Saumen, Karsch, Frithjof, Petreczky, Peter, Wetzorke, Ines
The behavior of charmonia after the deconfinement transition is investigated on quenched lattices. Analysis of temporal correlators on fine lattices at temperatures upto 3 T_c show that the J/psi and...
Behavior of Charmonium Systems after Deconfinement (2003)
Datta, Saumen, Karsch, Frithjof, Petreczky, Peter, Wetzorke, Ines
We present a study of charmonia in hot gluonic plasma, for temperatures upto three times the deconfinement transition temperature Tc. q \bar{q} systems with quark masses close to the charm mass and...
Lattice calculations of meson correlators and spectral functions at finite temperature (2003)
I review recent progress in relating meson spectral function to imaginary time correlation function at finite temperature calculated on isotropic as well as on anisotropic lattices. Special attention...
A Study of Charmonium Systems across the Deconfinement Transition (2002)
Datta, Saumen, Karsch, Frithjof, Petreczky, Peter, Wetzorke, Ines
We present results from lattice studies of charmonium systems near the deconfinement transition temperature. On quenched isotropic lattices with lattice spacings between 0.02 and 0.05 fm, bar{q} q...
Screening in Hot Non-Abelian Plasma (1999)
This thesis is devoted to the study of the screening masses in hot non-Abelian theories. Section 1 contain a brief introduction to the topic. In section 2 a detailed overview of the screening...
Screened Perturbation Theory (1997)
Karsch, Frithjof, Patkos, Andras, Petreczky, Peter
A new perturbative scheme is proposed for the evaluation of the free energy density of field theories at finite temperature. The screened loop expansion takes into account exactly the phenomenon of...