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Title: An equation-of-state-meter of quantum chromodynamics transition from deep learning

Journal Article · · Nature Communications
ORCiD logo [1]; ORCiD logo [2];  [3]; ORCiD logo [4];  [4]; ORCiD logo [5]
  1. Frankfurt Inst. for Advanced Studies (FIAS), Frankfurt (Germany); Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division
  2. Frankfurt Inst. for Advanced Studies (FIAS), Frankfurt (Germany); Goethe Univ., Frankfurt (Germany). Inst. fur Theoretische Physik
  3. Frankfurt Inst. for Advanced Studies (FIAS), Frankfurt (Germany)
  4. Frankfurt Inst. for Advanced Studies (FIAS), Frankfurt (Germany); Goethe Univ., Frankfurt (Germany). Inst. fur Theoretische Physik; GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division; Central China Normal Univ., Wuhan (China). Key Lab. of Quark and Lepton Physics (MOE) and Inst. of Particle Physics

A primordial state of matter consisting of free quarks and gluons that existed in the early universe a few microseconds after the Big Bang is also expected to form in high-energy heavy-ion collisions. Determining the equation of state (EoS) of such a primordial matter is the ultimate goal of high-energy heavy-ion experiments. Here we use supervised learning with a deep convolutional neural network to identify the EoS employed in the relativistic hydrodynamic simulations of heavy ion collisions. High-level correlations of particle spectra in transverse momentum and azimuthal angle learned by the network act as an effective EoS-meter in deciphering the nature of the phase transition in quantum chromodynamics. Finally, such EoS-meter is model-independent and insensitive to other simulation inputs including the initial conditions for hydrodynamic simulations.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Science Foundation (NSF); National Natural Science Foundation of China (NSFC); Helmholtz Association
Grant/Contract Number:
AC02-05CH11231; ACI-1550228; 11521064; 2014DFG02050; 2015CB856902
OSTI ID:
1433129
Journal Information:
Nature Communications, Vol. 9, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 81 works
Citation information provided by
Web of Science

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Cited By (12)

Quark jet versus gluon jet: fully-connected neural networks with high-level features journal June 2019
Equation of state at finite densities for QCD matter in nuclear collisions journal August 2019
Pseudorapidity distribution and decorrelation of anisotropic flow within the open-computing-language implementation CLVisc hydrodynamics journal June 2018
Regressive and generative neural networks for scalar field theory journal July 2019
Methodology study of machine learning for the neutron star equation of state journal July 2018
Deep learning and the AdS / CFT correspondence journal August 2018
Hydrodynamic attractor and the fate of perturbative expansions in Gubser flow journal June 2019
Machine learning and the physical sciences journal December 2019
Hydrodynamical response of plane correlation in Pb + Pb collisions at s NN = 2.76TeV journal October 2019
Effect of the QCD equation of state and strange hadronic resonances on multiparticle correlations in heavy ion collisions text January 2017
Hydrodynamic attractor and the fate of perturbative expansions in Gubser flow text January 2018
Regressive and generative neural networks for scalar field theory text January 2018

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