Quantifying the Chiral Magnetic Effect from Anomalous-Viscous Fluid Dynamics

Shi, Shuzhe; Jiang, Yin; Lilleskov, Elias; Yin, Yi; Liao, Jinfeng

doi:10.1016/j.nuclphysa.2017.06.006

Cited by 4 publications

(7 citation statements)

References 7 publications

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“…4. Although the value of the charge separation is comparable to that from the anomalous-viscous fluid dynamics (AVFD) [26], its transverse momentum dependence is different due to the stronger CME in the chiral kinetic approach for quarks of low momentum as a result of the Berry curvature p 2p 3 in the equations of motion and the modified phase-space distribution.…”

Section: B Transverse Momentum Dependence Of Charge Separationmentioning

confidence: 95%

“…To separate such v 2 -driven backgrounds from the CME, collisions involving isobaric systems such as Zr+Zr and Ru+Ru, which have the same atomic but different proton numbers, have been proposed [25] and planned at RHIC, because of their similar backgrounds but different CME signals due to the different magnetic fields generated in these collisions as a result of different proton numbers. It has been shown in a schematic study [25] and also in more complete studies based on the anomalous hydrodynamics [26] as well as the AMPT model with the an assumed initial charge separation [27] that the two collision systems have a relative difference in the charge separation of about ten precent.…”

Section: Introductionmentioning

confidence: 99%

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Chiral kinetic approach to the chiral magnetic effect in isobaric collisions

Sun

2018

Phys. Rev. C

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Based on the chiral kinetic approach using quarks and antiquarks from a multiphase transport model as initial conditions, we study the chiral magnetic effect, i.e., the magnetic field induced separation of charged particles in the transverse plane, in non-central isobaric collisions of Zr+Zr and Ru+Ru, which have the same atomic number but different proton numbers. For the observable γ OS − γ SS related to the difference between the correlations of particles of opposite charges and of same charges, we find a difference between the two collision systems if the magnetic field has a long lifetime of 0.6 fm/c and the observable is evaluated using the initial reaction plane. This signal of the chiral magnetic effect becomes smaller and comparable to the background contributions from elliptic flow if the event plane determined from particle emission angles is used. For the other observable given by the R(∆S) correlator related to the distribution of average charge separation in a collision, the signal due to the chiral magnetic effect is found to depend less on whether the reaction or event plane is used in the analysis, and their difference between the two isobaric collision systems is thus a more robust observable.

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Section: B Transverse Momentum Dependence Of Charge Separationmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Chiral kinetic approach to the chiral magnetic effect in isobaric collisions

Sun

2018

Phys. Rev. C

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“…Hence our AVFD simulation gives prediction that the CME signal would differs for ∼ 20%, as shown in the middle panel. Taking into account the non-CME background estimated from Au-Au collisions (details can be found in [10]), we could still expect a relative difference around 10%. Given the sufficient statistic of the IsoBar program, such difference shall be observed.…”

Section: Pos(cpod2017)021mentioning

confidence: 96%

“…To address this challenge, we've recently developed a simulation framework, the AnomalousViscous Fluid Dynamics (AVFD) [9,10], focusing on describing anomalous chiral transport in heavy ion collisions at high beam energy (such as the top energy RHIC collisions). The bulk evolution in such collisions is well described by boost-invariant 2+1D 2nd-order viscous hydrodynamics (e.g.…”

Section: Introduction -Chiral Magnetic Effect and Anomalous-viscous Flumentioning

confidence: 99%

Quantification of Chiral Magnetic Effect from Event-by-Event Anomalous-Viscous Fluid Mechanics

Shi¹,

Jiang²,

Lilleskov³

et al. 2018

Proceedings of Critical Point and Onset of Deconfinement — PoS(CPOD2017)

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Chiral Magnetic Effect (CME) is the macroscopic manifestation of the fundamental chiral anomaly in a many-body system of chiral fermions, and emerges as anomalous transport current in hydrodynamic framework. Experimental observation of CME is of great interest and significant efforts have been made to look for its signals in heavy ion collisions. Encouraging evidence of CME-induced charge separation has been reported from both RHIC and LHC, albeit with ambiguity due to potential background contributions. Crucial for addressing such issue, is the need of quantitative predictions for both CME signal and the non-CME background consistently, with sophisticated modeling tool. In this contribution we report a recently developed Anomalous Viscous Fluid Dynamics (AVFD) framework, which simulates the evolution of fermion currents in QGP on top of the data-validated VISHNU bulk hydro evolution. In particular, this framework has been extended to event-by-event simulations with proper implementation of known flow-driven background contributions. We report quantitative results from such simulations and evaluate the implications for interpretations of current experimental measurements. Finally we give our prediction for the CME signal in upcoming isobaric collisions. Critical Point and Onset of Deconfinement

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“…The relativistic hydrodynamic simulations associated with a small shear viscosity rather successfully explain the flow data and transverse momentum spectra of ultimate hadron from heavy ion collisions, for reviews please refer to Refs [1][2][3][4][5]. Soon afterwards the viscous effects on the diverse aspects of the hot QGP, including photon and dilepton production [6,7], heavy quarkonium dissolution [8,9], energy loss suffered by the fast parton traveling through the QGP [10][11][12][13] and the induced wakes [14][15][16][17][18], the quark polarization [19] and the chiral magnetic/vortical effects [20][21][22], the dielectric properties of the QGP medium [23][24][25] and the dynamical evolution of QCD matter during the first-order phase transition from hadronic matter to quark matter [26], have been addressed in recent years.…”

Section: Introductionmentioning

confidence: 99%

Color-electric conductivity in a viscous quark-gluon plasma

Jiang,

Shi,

Hou

et al. 2020

Preprint

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Several different transport processes, such as heat transport, momentum transport and charge transport, may take place at the same time in the quark-gluon plasma (QGP). The corresponding transport coefficients are heat conductivity, shear viscosity and electric conductivity respectively. In the present paper, we will study the color-electric conductivity of the QGP in presence of shear viscosity, which is focused on the connection between the charge transport and the momentum transport. To achieve that goal, we solve the viscous chromohydrodynamic equations which are obtained from the QGP kinetic theory associated with the distribution function modified by shear viscosity. According to the solved color fluctuations of hydrodynamic quantities we obtain the induced color current through which the color-electric conductivity is derived. Then we study viscous effects on the color-electric conductivity. In the viscous chromohydrodynamic approach, the conductivity properties of the QGP are mainly demonstrated by the longitudinal part of the color-electric conductivity. Shear viscosity has an appreciable impact on real and imaginary parts of the color-electric conductivity in some frequency region.

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Quantifying the Chiral Magnetic Effect from Anomalous-Viscous Fluid Dynamics

Cited by 4 publications

References 7 publications

Chiral kinetic approach to the chiral magnetic effect in isobaric collisions

Chiral kinetic approach to the chiral magnetic effect in isobaric collisions

Quantification of Chiral Magnetic Effect from Event-by-Event Anomalous-Viscous Fluid Mechanics

Color-electric conductivity in a viscous quark-gluon plasma

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