Conveners
QCD phase diagram: 1
- Tetsuo Hatsuda (Unknown)
QCD phase diagram: 2
- Helen Louise Caines (Yale University (US))
QCD phase diagram: 3
- Alexander Sorin (Joint Inst. for Nuclear Research (RU))
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Kai Schwenzer (W)20/05/2014, 09:00New Theoretical DevelopmentsContributed TalkAstrophysical observations of compact stars provide, in addition to collider experiments, the other big source of information on matter under extreme conditions. The largest and most precise data set about neutron stars is the timing data of radio pulsars. We show how this unique data can be used to learn about the ultra-dense matter in the compact star interior. The method relies on...Go to contribution page
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Feng Zhao (University of California, Los Angeles)20/05/2014, 09:20QCD Phase DiagramContributed TalkQCD allows for the formation of parity-odd domains inside the Quark-Gluon Plasma (QGP). The proposed Chiral Magnetic Effect (CME) will lead to charge separation with respect to the reaction plane. Previous measurements from RHIC and LHC using charge-dependent two-particle azimuthal correlations with respect to the reaction plane are consistent with the expectation of charge separation from...Go to contribution page
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Gergely Endrodi (U)20/05/2014, 09:40QCD Phase DiagramContributed TalkIn this talk recent lattice QCD results are presented about the response of the thermal QCD vacuum to external (electro)magnetic fields. Characteristic features of this response include the reduction of the deconfinement transition temperature due to the magnetic field and the paramagnetic nature of the QCD vacuum as a medium. The latter results in a squeezing of the quark-gluon plasma if the...Go to contribution page
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Qi-Ye Shou (SINAP, BNL)20/05/2014, 10:00QCD Phase DiagramContributed TalkTheoretical studies [1] indicate that in relativistic heavy collisions a chiral magnetic wave at finite baryon density could induce an electric quadrupole moment, which will lead to a difference in elliptic flow of hadrons with opposite charge. The magnitude of this difference is predicted to be proportional to the charge asymmetry $A_\mathrm{ch}$, defined as $A_\mathrm{ch} \equiv \langle...Go to contribution page
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Toru Kojo (Bielefeld University)20/05/2014, 10:20QCD Phase DiagramContributed TalkIt has been known that magnetic fields enhance the chiral symmetry breaking (ChSB). According to studies of QED or models of the 4-fermi interactions, it was expected that the enhanced ChSB would resist the chiral restoration effects, increasing critical temperatures for the chiral restoration and deconfinement. Recent lattice calculations, however, showed the opposite behavior: the critical...Go to contribution page
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Pasi Huovinen (Johann Wolfgang Goethe-Universitรคt)20/05/2014, 14:20QCD Phase DiagramContributed TalkThe effects of non-zero baryon density are expected to become important in hydrodynamic modeling of heavy collisions below the highest energy at RHIC. Recent calculations in effective models and in QCD using Dyson Schwinger equation suggest that the transition in QCD remains a crossover up to baryon chemical potentials of about 800MeV [1]. If so, the equation of state relevant for...Go to contribution page
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Prof. Christian Fischer (JLU Giessen)20/05/2014, 14:40QCD Phase DiagramContributed TalkI review resent results on the chiral and deconfinement transitions of QCD and the associated phase diagram obtained from a combination of lattice results with the framework of Dyson-Schwinger equations. At zero chemical potential we find excellent agreement with existing lattice results. We discuss the potential location of the critical endpoint for Nf=2+1 and Nf=2+1+1 flavors and...Go to contribution page
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Dr Ron Soltz (Lawrence Livermore Nat. Laboratory (US))20/05/2014, 15:00QCD Phase DiagramContributed TalkThe Beam Energy Scan (BES) program at RHIC has shown the flexibility to vary the beam energy per nucleon by more than an order of magnitude, down to the equivalent $\sqrt{s_{NN}}$ of SPS fixed-target collisions and below. This allows the RHIC experiments to systematically track the evolution of excited nuclear matter as it crosses the QGP transition, and to explore new physics at...Go to contribution page
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Dr Manuel Lorenz (GU Frankfurt)20/05/2014, 15:20QCD Phase DiagramContributed TalkData on particle production in heavy ion collisions in the energy regime of 1-2 A GeV have been collected over almost three decades now. As most of the newly created hadrons are produced below or slightly above their free NN-thresholds, data are usually interpreted with the help of phenomenological models, rather than comparing to elementary reference measurements. Driven by advance in...Go to contribution page
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Ralf-Arno Tripolt (TU Darmstadt)20/05/2014, 15:40QCD Phase DiagramContributed TalkWe present a new method to obtain real-time quantities such as spectral functions and transport coefficients at finite temperature and density using a non-perturbative Functional Renormalization Group approach [1]. Our method is based on a thermodynamically consistent truncation of the flow equations for 2-point functions with analytically continued frequency components in the...Go to contribution page
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AMAL SARKAR (iit-bombay)21/05/2014, 11:10Correlations and FluctuationsContributed TalkThe main goal of the Beam Energy Scan (BES) program at RHIC is to map the phase diagram of QCD. A critical point (CP) is expected at large baryonic chemical potential ($\mu_{B}$) in the $T$ vs. $\mu_{B}$ phase diagram. Its location experimentally will provide one of the most stringent tests of QCD calculations. In the BES program $T$ and $\mu_{B}$ are varied by changing the center of...Go to contribution page
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Claudia Ratti21/05/2014, 11:30QCD at High Temperature and/or DensityContributed TalkRecent results for moments of multiplicity distributions of net-protons and net-electric charge from the Star collaboration are compared to recent lattice QCD results for higher order fluctuations of baryon number and electric charge by the Wuppertal-Budapest collaboration. All lattice simulations are performed at the physical mass for light and strange quarks; all results are continuum...Go to contribution page
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Dr Xiaofeng Luo (Central China Normal University)21/05/2014, 11:50QCD Phase DiagramContributed TalkExperimental confirmation of the QCD critical point is an excellent test of QCD theory in the non-perturbative region and a milestone of exploring the QCD phase diagram. It is one of the main goals of the RHIC Beam Energy Scan (BES) program. Due to the high sensitivity to the correlation length [1] of the dynamical system and directly connected to the susceptibilities in theoretical...Go to contribution page
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Dr Marcus Bluhm (North Carolina State University)21/05/2014, 12:10QCD Phase DiagramContributed TalkFluctuations in the conserved charges of the strong interaction are important probes in high-energy heavy-ion collisions, which provide an excellent opportunity for revealing details in the phase structure of QCD matter. Recently, net-electric charge and net-proton fluctuations measured in the beam energy scan program at RHIC were reported by the STAR collaboration. In this talk, we present a...Go to contribution page
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Christian Schmidt (University of Bielefeld)21/05/2014, 12:30QCD Phase DiagramContributed TalkHigher order cumulants of fluctuations of conserved charges are an important diagnostic tool for the thermodynamic properties of strong interacting matter close to freeze out [1] at LHC energies as well as in the entire energy range covered with the beam energy scan (BES) at RHIC. We present recent progress on the calculation of conserved charge fluctuations with highly improved staggered...Go to contribution page
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Atsushi Nakamura (Hiroshima Univ)21/05/2014, 12:50QCD Phase DiagramContributed TalkWe report a new way to extract the QCD phase transition from the net baryon multiplicity. The method provides us not only a freeze-out temperature- density point, but also the neighbour of the point. In other words, Beam Energy Scan explores not only points, but also regions with the finite spreads in $\mu$-$T$ plane, where $\mu$ is the chemical potential, and $T$ is the...Go to contribution page
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Tetsufumi Hirano (Sophia Univ)21/05/2014, 13:10New Theoretical DevelopmentsContributed TalkWe discuss multiplicity fluctuation caused by noises during hydrodynamic evolution of the quark-gluon fluid created in high-energy nuclear collisions. In this talk, we claim the following non-trivial consequences within a framework of relativistic fluctuating hydrodynamics [1]: - Multiplicity (being approximately proportional to entropy) fluctuates from event to event due to...Go to contribution page