Jinfeng Liao
Indiana University

Mikhail Stephanov
University of Illinois at Chicago

Zhangbu Xu
Brookhaven National Laboratory

Ho-Ung Yee
University of Illinois at Chicago

Diversity Coordinator:

Jinfeng Liao
Indiana University

Program Coordinator:

Farha Habib (on leave)
(206) 685-3360

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INT Program INT-20-1c

Chirality and Criticality: Novel Phenomena in Heavy-Ion Collisions

May 11 - June 5, 2020

Update: Due to the COVID-19 pandemic, the program plan has been revised accordingly to become a two-week online virtual program from May 11-22. Click for information and scientific program.

The Relativistic Heavy Ion Collider (RHIC) in Brookhaven National Laboratory are currently searching for the novel phenomena of chirality and criticality. The isobaric collision experiment, contrasting the RuRu and ZrZr colliding systems, is specifically designed to probe potential signals of the Chiral Magnetic Effect (CME), that will be the crucial test for the topological aspects of QCD and other associated phenomena. The Beam Energy Scan II (BES II) aim to provide decisive discovery of critical fluctuations of the QCD critical point (QCDCP), the existence of which is one of the fundamental questions in nuclear physics emphasized in the 2015 NSAC Long Range Plan. Moreover, the 27 GeV Au-Au experiments is dedicated to explore global spin polarization of Lambda hyperons, that is a fascinating evidence of the vorticity of the created plasma and the quantum spins of its constituents.

This 4-week program will gather theorists and experimentalists working on these novel many-body phenomena and related subjects in heavy-ion collisions, also including realistic simulations of heavy-ion collisions as well as recent developments in lattice QCD equation of states pertinent to these subjects. We plan to have a flexible program schedule, with these topics discussed and mixed together in each of the weeks 1, 3 and 4. We will organize the talks and discussions according to the main themes listed below. In week 2 (May 18-22), we will host a full-week workshop broadly open to related fields of study, that is jointly supported by the Beam Energy Scan Theory (BEST) topical collaboration. A workshop registration fee may apply. The registration fee includes participation in the workshop, lectures, and coffee breaks.

Main Themes

  • Weeks 1 and 3: QCD critical point and its experimental search. Real-time dynamics of critical fluctuations in/off equilibrium and their dependence on spatial scales. Sensitivities and limitations of experimental observables.

  • Weeks 1 and 3: Chiral transport phenomena and the isobar collisions. Topology of QCD in finite temperature and density. Magneto-hydrodynamics. Chiral kinetic theory. Turbulence with chiral transport phenomena. Implications in astro physics and condensed matter physics of Dirac/Weyl semi-metals.

  • Weeks 3 and 4: Quantum many-body phenomena from spin-polarization. QCD plasma in strong vorticity and/or magnetic field. Hydrodynamics with quantum spins. Global and local polarization measurements at RHIC and LHC.

  • Weeks 1, 3 and 4: Realistic heavy-ion simulations including the effects from chirality and criticality. Important background effects to the experimental signatures.
  • Weeks 1, 3 and 4: Lattice QCD study of the equation of state at finite density and topological fluctuations.