2019 COST Action CA15213 THOR Annual Meeting

Europe/Istanbul
Istanbul Technical University

Istanbul Technical University

İTÜ (İstanbul Technical University) Maçka Kampüsü Sosyal Tesisler Binası 34367 Teşvikiye, İstanbul, Turkey
Nihal Buyukcizmeci (Selcuk University)
Description

Theory of hot matter and relativistic heavy-ion collisions, THOR

Annual Meeting, 2-6 September 2019, Istanbul, Turkey


Topics for Working Group Meetings 

Quark-gluon phase transition and equation of state

Non equilibrium and transport phenomena in hot dense QCD matter

Hadronisation and lepton pair production in heavy-ion collisions

Hadron, fragment and light cluster formation

Statistical and dynamical models for relativistics ion collisions

QCD phases in supernova collapse, compact stars and binary mergers

 

Scientific Committee: (names are in alphabetical order.)

Gert Aarts (Swansea University, United Kingdom)

Jorg Aichlein, (Subatech, Nantes, France)

Marcus Bleicher, ( FIAS, Frankfurt, Germany)

Alexander Botvina, ( ITP, Frankfurt University, Frankfurt, Germany)

Larissa Bravina (Oslo University, Oslo, Norway)

Nihal Buyukcizmeci (Selcuk University,  Konya, Turkey), (Local Organiser)

Elena Gonzalez Ferreiro (Universidade de Santiago de Compostela, Spain)

Umut Gursoy (Utrecht University, Netherlands)

Maria Paola Lombardo (INFN, Italy)

Boris Tomasik (Univerzita Mateja Bela, Banská Bystrica, Slovakia)

Meeting Location: İTÜ (İstanbul Technical University) Maçka Kampüsü Sosyal Tesisler Binası 34367 Teşvikiye, İstanbul, Turkey 

Participants
  • Alexander Botvina
  • Andreas Ipp
  • Andreas Schmitt
  • Angel Gomez Nicola
  • Bojana Ilic (Blagojevic)
  • Boris Tomasik
  • Chihiro Sasaki
  • Dubravko Klabucar
  • Dusan Zigic
  • Elena Bratkovskaya
  • Gergely Gabor Barnafoldi
  • Iurii Karpenko
  • Jameel-Un Nabi
  • Jan Cepila
  • Jean-Paul Blaizot
  • Joerg Aichelin
  • Jon-Ivar Skullerud
  • Larissa Bravina
  • Marcus Bleicher
  • Maria Paola Lombardo
  • Matti Jarvinen
  • Michael Lublinsky
  • Miguel Ángel Escobedo Espinosa
  • Mikko Laine
  • Mirza Hadžimehmedović
  • Márcio Ferreira
  • Necla Cakmak
  • Nihal Buyukcizmeci
  • Nuretdin Eren
  • Owe Philipsen
  • Piotr Bozek
  • Roman Pasechnik
  • Sergei Nedelko
  • Tuna Demircik
    • 09:40 09:50
    • 09:50 10:30
      Production mechanisms for nuclear and hyper-nuclear clusters in relativistic ion collisions 40m
      Speaker: Alexander Botvina (FIAS, University of Frankfurt am Main)
    • 10:30 11:10
      Double ratio method for the binding energies of hypernuclei in nuclear reactions 40m
      Speaker: Nihal Buyukcizmeci (Selcuk University)
    • 11:10 11:40
      Coffee break 30m
    • 11:40 12:20
      Progress in chiral thermodynamics 40m
      Speaker: Chihiro Sasaki
    • 12:20 13:00
      Chiral transport in strong fields from holography 40m

      Anomaly-induced transport phenomena in presence of strong external electromagnetic fields are explored within a 4D field theory defined holographically as U(1)V×U(1)A Maxwell-Chern-Simons theory in Schwarzschild-AdS5. Two complementary studies are reported. In the first one, we present results on the Ohmic conductivity, diffusion constant, chiral magnetic conductivity, and additional anomaly-induced transport coefficients as functions of external e/m fields. Next, gradient resummation in a constant background magnetic field is performed. All-order resummed constitutive relations are parameterised by four momenta-dependent transport coefficient functions (TCFs). A highlight of this part is a thorough study of {\it non-dissipative} chiral magnetic waves (CMW) in strong magnetic fields. (reference-doi: 10.1007/JHEP05(2019)071)

      Speaker: Dr Tuna Demircik (Ben-Gurion University of the Negev)
    • 13:00 14:30
      LUNCH 1h 30m
    • 14:30 15:10
      Heavy Quarks in Medium 40m
      Speaker: Miguel Ángel Escobedo Espinosa (Instituto Galego de Física de Altas Enerxías)
    • 15:10 15:50
      Broken boost invariance in 3+1D Glasma simulations 40m
      Speaker: Andreas Ipp (TU Wien)
    • 15:50 16:20
      Coffee break 30m
    • 16:20 17:00
      Latest results on constraining the initial stages of heavy-ion collisions with high-pt data 40m
      Speaker: Dr Bojana Ilic (Blagojevic) (Institute of Physics Belgrade)
    • 17:00 17:40
      Recent results with full DREENA framework as a multipurpose tool for QGP tomography 40m
      Speaker: Dusan Zigic (Institute of Physics Belgrade)
    • 09:50 10:30
      PNJL EOS at finite density and temperature 40m
      Speaker: joerg aichelin (Subatech/CNRS)
    • 10:30 11:10
      Observables of the nonequilibrium phase 40m
      Speaker: Boris Tomasik (Univerzita Mateja Bela)
    • 11:10 11:40
      Coffee break 30m
    • 11:40 12:20
      Dynamical description of partonic phase at finite chemical potential 40m
      Speaker: Elena Bratkovskaya (GSI, Darmstadt)
    • 12:20 13:00
      Weak Interaction Data for Presupernova Evolution of Massive Stars 40m
      Speaker: Prof. Jameel Un Nabi (GIK Institute of Engineering Sciences&Technology, Pakistan)
    • 13:00 14:30
      LUNCH 1h 30m
    • 14:30 15:10
      Domain wall networks as QCD vacuum 40m

      An approach to QCD vacuum as a medium describable in terms of statistical ensemble of almost everywhere homogeneous Abelian (anti-)self-dual gluon field is briefly reviewed. These fields can be seen as the confining medium for color charged fields as well as underline the specific realization of chiral $SU_{\rm L}(N_f)\times SU_{\rm R}(N_f)$ and $U_A(1)$ symmetries. The long-range fluctuations of topological charge density play important role both for confinement and chiral symmetry breaking.

      Hadronization formalism based on this ensemble leads to manifestly defined quantum effective action for colorless hadrons. Strong, electromagnetic and weak interactions of mesons are represented in the action in terms of nonlocal $n$-point interaction vertices given by the quark-gluon loops averaged over the background ensemble. Systematic results for the mass spectrum and decay constants of radially excited light, heavy-light mesons and heavy quarkonia as well as electromagnetic form factors are presented. Interrelations between the present mean field type approach and the results of functional renormalization group and DSE results are discussed.

      Peculiarities of the approach in description of deconfinement and chiral symmetry restoration under extreme conditions (strong electromagnetic fields, high energy and baryon densities) are outlined.

      [1] S.N. Nedelko and V.E Voronin, arXiv:1906.00432 [hep-ph] (2019).
      [2] S.N. Nedelko and V.E Voronin, Phys.Rev.D 95, 074038 (2017)
      [3] S.N. Nedelko and V.E Voronin, Phys.Rev.D 93, 094010 (2016)
      [4] S.N. Nedelko and V.~E.~Voronin, Eur.Phys.J. A 51, 45 (2015)
      [5] B.V. Galilo and S.N. Nedelko, Phys.Rev. D 84, 094017 (2011)

      Speaker: Sergei Nedelko (Joint Institute for Nuclear Research, BLTP)
    • 15:10 15:50
      Jets n small systems 40m
      Speaker: Prof. Barnafoldi Gergerly Gabor (Wigner RCP Hungarian Academy of Sciences Hungary)
    • 15:50 16:20
      Coffee break 30m
    • 16:20 17:00
      Net-baryon fluctuations in Magnetized QCD matter 40m

      The kurtosis and skewness of net baryon-number fluctuations are studied for the magnetized phase diagram of three-flavor quark matter within the Polyakov extended Nambu–Jona-Lasinio model. The effect of magnetic catalysis and inverse magnetic catalysis is considered using two distinct scalar interactions. Special attention is given to the fluctuations dependence near the critical end points (CEPs). Regions with large fluctuations but no CEP in non-magnetized matter develop a CEP under the action of a strong magnetic field.

      Speaker: Márcio Ferreira
    • 17:00 17:40
      The spatial sub-separation of strangeness from anti-strangeness in RHICs 40m
      Speaker: Larissa Bravina
    • 09:50 10:30
      Emergence of hydrodynamical behaviour in the Quark Gluon Plasma 40m
      Speaker: Prof. Jean-Paul Blaizot (IPhT, France)
    • 10:30 11:10
      The phases of QCD and holography 40m
      Speaker: Matti Jarvinen (Utrecht University)
    • 11:10 11:40
      Coffee break 30m
    • 11:40 12:20
      T-dependence of the axion mass from the tied chiral and U_A(1) symmetry restoration 40m
      Speaker: Dubravko Klabucar (University of Zagreb)
    • 12:20 13:00
      Eta prime in the QGP 40m

      Maria Paola Lombardo (INFN, Italy)

      Speaker: Maria Paola Lombardo (INFN)
    • 13:00 14:30
      LUNCH 1h 30m
    • 14:30 15:10
      Jet energy loss and jet overlap in heavy ion collisions 40m
      Speaker: Prof. Iiuri Karpenko (SUBATECH Nantes, France)
    • 15:10 15:50
      Entanglement Entropy in High Energy Collisions 40m
      Speaker: Michael Lublinsky
    • 15:50 16:20
      Coffee break 30m
    • 16:20 17:00
      Light-front approach to quarkonia production 40m
      Speaker: Roman Pasechnik (Lund university)
    • 17:00 17:40
      Partial wave analysis as a tool in baryon spectroscopy 40m
      Speaker: Mirza Hadzimehmedovic (University of Tuzla)
    • 09:00 11:15
      Management Committee Meeting 2h 15m
      Speaker: Marcus Bleicher (Uni Frankfurt)
    • 11:15 11:45
      Coffee break 30m
    • 11:45 14:00
      Management Committee Meeting 2h 15m
      Speaker: Boris Tomasik (Univerzita Mateja Bela)
    • 14:00 15:10
      LUNCH 1h 10m
    • 15:10 15:50
      Discussion- White paper 40m
    • 15:50 16:20
      Coffee break 30m
    • 16:20 17:00
      Dense nuclear and quark matter from holography 40m

      There are currently no first-principle calculations for QCD at large, but not asymptotically large, baryon densities. For instance, we do not know at which densities there is a transition from nuclear matter to deconfined quark matter and what the nature of this transition is. I will discuss a holographic approach, using the Sakai-Sugimoto model, in which nuclear matter and quark matter are treated consistently on the same footing. In particular, baryons are described as instantons in the bulk and I will explain an approximation that takes into account instanton interactions. The results show that nuclear and quark matter can be connected continuously, and thus the model can be used to study a potential quark-hadron continuity at densities relevant for the cores of neutron stars.

      Speaker: Andreas Schmitt (University of Southampton)
    • 17:00 17:40
      Testing photon and dilepton rates in thermal QCD 40m

      Speaker: Mikko Sakari Laine (Universitaet Bern (CH))
    • 09:50 10:30
      Hadrons masses at high Tc 40m

      Jon-Ivar Skullerud

      Speaker: Prof. Jon-Ivar Skullerud ((National University of Ireland Maynooth, Ireland)
    • 10:30 11:10
      Chiral Symmetry Restoration, patterns and partners within the QCD phase diagram 40m

      I will review several aspects of the QCD phase diagram, paying special attention to the interplay between chiral and $U(1)_A$ restoration, exploring partner degeneration and patterns of symmetry breaking. I will show that the use of Ward Identities (WI) allows to shed light on this issue, being also a fruitful tool for the understanding of thermal observables. In addition, effective chiral lagrangians provide a model-independent realization of these ideas. In fact, a simple meson gas description might be already a good approximation for certain observables. Thus, Chiral Perturbation Theory (ChPT) scattering amplitudes combined with unitarization generate a thermal $f_0(500)$ state which saturates the scalar susceptibility in accordance with the lattice. On the other hand, a $U(3)$ ChPT-based analysis of the topological susceptibility reveals interesting aspects of the role of the $\eta'$ state and the connection with chiral and $U_A(1)$ restoration through WI.

      Speaker: Prof. Angel Gomez Nicola (Universidad Complutense Madrid)
    • 11:10 11:40
      Coffee break 30m
    • 11:40 12:20
      Finite density QCD 40m
      Speaker: Owe Philipsen (Goethe-University Frankfurt)
    • 12:20 13:00
      Collective dynamics in small systems 40m
      Speaker: Piotr Bozek (AGH University of Science and Technology)
    • 13:00 13:10
      General discussion-Closing remarks 10m