Strong Magnetic Fields in HIC

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Presentation transcript:

Strong Magnetic Fields in HIC V. Toneev In collaboration with E. Bratkovskaya, W. Cassing, V. Konchakovski, S. Voloshin V. Voronyuk ♥ Lecture 1. Collective Properties of Heavy Ion Collisions within Non-equilibrium Dynamics ♥ Lecture 2. Evolution of the Electromagnetic Field in HIC and Chiral Magnetic Effect August 28 - September 8, 2012, Dubna, Helmholtz International School Dense Matter in Heavy-Ion Collisions and Astrophysics

Lecture 1. Collective Properties of Heavy Ion Collisions within Non-equilibrium Dynamics ♥ Parton Hadron-String Dynamics Model ♥ Flows in Heavy Ion Collisions from AGS to RHIC energy range

Parton-Hadron String Dynamics: Goul and main ingredients

The dynamical quasiparticle model (DQPM) Entropy density in the quasiparticle limit Bose and Fermi distribution functions Quasiparticle propogators Self energies

Off-shell elements in the DQPM

Thermodynamics => transport approach Parton density (DQPM)

Boltzmann equation -> off-shell transport see D.Voskresensky’s lectures

PHSD: hadronization

PHSD: hadronization

Hadronization details

PHSD - summarizing

Expanding fireball

Global obsrvables: rapidity spectra of π-, K+ and K- at SPS

Transverse momentum spectra at SPS

Rapidity spectra at RHIC

Transverse mass spectra at RHIC

Flow harmonics M.Nasim et al.,, PR C82, 054908 (2010) Energy dependence of v Neither hadronic nor partonic models can explain the energy dependence of v2 ! Almond-like interaction zone ? pressure gradient => spatial asymmetry is converted to an asymmetry in momentum space => collective flow Direct flow Elliptic flow

Event plane angle fluctuation Au+Au (200 GeV); b=10 fm Distribution of odd harmonics is practically flat in 0<Ѱn<2π/n; even harmonics are picked at zero. There is no “tilting” effect due to EM field V.Konchakovski et al., PR C85, 044922 (2012)

v2 is reasonably described by PHSD due to an increasing fraction of partonic degrees of freedom ! V.Konchakovski et al., PR C85, 044922 (2012)

Time evolution of vn (early time formation) V.Konchakovski et al., PR C85, 044922 (2012)

V.Konchakovski et al., PR C85, 044922 (2012)

“universal” scaling approximately works in PHSD but fails in hydrodynamics V.Konchakovski et al., PR C85, 044922 (2012)

Scaling in pseudo-rapidity Longitudinal scaling approximately works in PHSD V.Konchakovski et al., PR C85, 044922 (2012)

V.Konchakovski et al., PR C85, 044922 (2012)

V.Konchakovski et al., PR C85, 044922 (2012)

Not compatible with ideal hydrodynamics and very sensitive to the microscopic dynamics V.Konchakovski et al., PR C85, 044922 (2012)

A. Peshier, W. Cassing, PRL 94, 172301 (2005)