Chiral magnetic currents with QGP medium response in heavy-ion collisions at RHIC and LHC energies

She, Duan; Feng, Sheng-Qin; Zhong, Yang; Yin, Z.

doi:10.1140/epja/i2018-12481-x

Cited by 25 publications

(28 citation statements)

References 50 publications

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“…The heavy ion collisions at RHIC and LHC experiments produce strong electro-magnetic fields. As a result, studying the Schwinger effect in the strong magnetic field (m 2 π ∼ 15m 2 π ) created by RHIC and LHC [34][35][36][37][38] is the main motivation of this paper. The strong magnetic fields may provide us some different views for the vacuum structure and we expect the Schwinger effect may be observed through the heavy-ion collisions experiments in future.…”

Section: Introductionmentioning

confidence: 99%

Potential analysis of holographic Schwinger effect in the magnetized background

2020

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We study the holographic Schwinger effect with magnetic field at RHIC and LHC energies by using the AdS/CFT correspondence. We consider both weak and strong magnetic field cases with $$B\ll T^2$$B≪T2 and $$B\gg T^2$$B≫T2 solutions respectively. Firstly, we calculate separating length of the particle pairs at finite magnetic field. It is found that for both weak and strong magnetic field solutions the maximum value of separating length decreases with the increase of magnetic field , which can be inferred that the virtual electron-positron pairs become real particles more easily. We also find that the magnetic field reduces the potential barrier and the critical field for the weak magnetic field solution, thus favors the Schwinger effect. With strong magnetic field solution, the magnetic field enhances the Schwinger effect when the pairs are in perpendicular to the magnetic field although the magnetic field increases the critical electric field.

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Section: Introductionmentioning

confidence: 99%

Potential analysis of holographic Schwinger effect in the magnetized background

2020

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“…which gives a non-uniform magnetic field in the ẑ-direction as B = B 0 e −αx ẑ, where B 0 is a constant, and the parameter α is the non-uniformity parameter [45]. This form of magnetic field can have a role in different branches of physics, like in chiral magnetic effect in particle physics [46], searching the quantum structure of graphene [47], and within the supersymmetric quantum mechanics where supersymmetry is broken [48]. In order to have also an eigenfunction of y-and z-component of the linear momentum operator, we write the wave function as…”

Section: Modelmentioning

confidence: 99%

Thermodynamic properties of a charged particle in non-uniform magnetic field

2021

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We solve the Schrödinger equation for a charged particle in the non-uniform magnetic field by using the Nikiforov-Uvarov method. We find the energy spectrum and the wave function, and present an explicit relation for the partition function. We give analytical expressions for the thermodynamic properties such as mean energy and magnetic susceptibility, and analyze the entropy, free energy and specific heat of this system numerically. It is concluded that the specific heat and magnetic susceptibility increase with external magnetic field strength and different values of the non-uniformity parameter, α, in the low temperature region, while the mentioned quantities are decreased in high temperature regions due to increasing the occupied levels at these regions. The non-uniformity parameter has the same effect with a constant value of the magnetic field on the behavior of thermodynamic properties.On the other hand, the results show that transition from positive to negative magnetic susceptibility depends on the values of non-uniformity parameter in the constant external magnetic field.

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“…the widely accepted and used three-parameter Fermi model (3pF) for heavy ions, with the relativistic Lorentz contraction effect taken into account. For a source point r = (x , y , z ) = (r ⊥ , z ) within the colliding nucleus (with charge Ze, and e = |e|) with its center located at r c = (0, 0, 0), the generalized charge number density reads [26,95],…”

Section: A Generalization Of Charge Distributions For Heavy-ion Colli...mentioning

confidence: 99%

Electromagnetic fields from the extended Kharzeev-McLerran-Warringa model in relativistic heavy-ion collisions

Chen,

Sheng,

2021

Preprint

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Based on the Kharzeev-McLerran-Warringa (KMW) model that estimates the strong electromagnetic (EM) fields generated in relativistic heavy-ion collisions, we generalize the formulas of EM fields in the vacuum by incorporating the longitudinal position dependence, the generalized charge density distribution and retardation correction. We further generalize the formulas of EM fields in the QGP medium by incorporating a constant Ohm electric conductivity. Using the extended KMW model, we observe a slower time evolution and a more reasonable impact parameter b dependence of the magnetic field strength than those from the original KMW model in the vacuum. The constant electric conductivity from lattice QCD data helps further prolong the time evolution of magnetic field, so that the magnetic field strength at the thermal freeze-out time matches the required magnetic field strength for the explanation of the observed difference in global polarizations of Λ and Λ hyperons in Au+Au collisions at RHIC. These generalized formulations in the extended KMW model could be potentially useful for many EM fields relevant studies in relativistic heavy-ion collisions at lower colliding energies and for various species of colliding nuclei.

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Chiral magnetic currents with QGP medium response in heavy-ion collisions at RHIC and LHC energies

Cited by 25 publications

References 50 publications

Potential analysis of holographic Schwinger effect in the magnetized background

Potential analysis of holographic Schwinger effect in the magnetized background

Thermodynamic properties of a charged particle in non-uniform magnetic field

Electromagnetic fields from the extended Kharzeev-McLerran-Warringa model in relativistic heavy-ion collisions

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