Rajiv V. Gavai

Pressure and nonlinear susceptibilities in QCD at finite chemical potentials

When the free energy density of QCD is expanded in a Taylor series in the chemical potential

Heavy Quark Momentum Diffusion Coefficient from Lattice QCD

\ensuremath{\mu},

Susceptibilities and screening masses in two flavor QCD

the coefficients are the nonlinear quark number susceptibilities. We show that these depend on the prescription for putting the chemical potential on the lattice, making all extrapolations in the chemical potential prescription dependent at finite lattice spacing. To put bounds on the prescription dependence, we investigate the magnitude of the nonlinear susceptibilities over a range of temperature, T, in QCD with two degenerate flavors of light dynamical quarks at lattice spacing

Continuum limit of quark number susceptibilities

1/4T.

Valence quarks in the QCD plasma: Quark number susceptibilities and screening

The prescription dependence is removed in quenched QCD through a continuum extrapolation, and the dependence of the pressure P on

Speed of sound and specific heat in the QCD plasma: Hydrodynamics, fluctuations, and conformal symmetry

\ensuremath{\mu}

Finite-temperature phase transition in SU(2) lattice gauge theory with extended action

is obtained.

J/Ψ production in the central region of pp and AA collisions

The momentum diffusion coefficient for heavy quarks is studied in a deconfined gluon plasma in the static approximation by investigating a correlation function of the color electric field using Monte Carlo techniques. The diffusion coefficient is extracted from the long-distance behavior of such a correlator. For temperatures TcT≲2Tc, our nonperturbative estimate of the diffusion coefficient is found to be very different from the leading-order perturbation theory and is in the right ballpark to explain the heavy quark flow seen by the PHENIX Collaboration at the RHIC experiment.

Thermodynamics of the ideal overlap quarks on the lattice

We study QCD with two flavors of dynamical staggered quarks at finite temperature, with a bare sea quark mass of about 17 MeV. We report investigations of baryon, isospin, charge and strangeness susceptibilities, as well as screening masses obtained from correlators of local and one-link separated meson operators. These are studied as functions of the valence quark mass at several temperatures. Our results for susceptibilities deviate significantly from ideal gas values, and even more from the weak coupling series. We also report the first measurement of off-diagonal quark number susceptibilities below the transition temperature

The QCD Critical Point: Marching towards continuum

{T}_{c},