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arXiv 2107.02176nucl-th
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相对论重离子碰撞中电磁场演化影响下的粒子椭圆流

Elliptic Flow of Particles under the Influence of Electromagnetic Field Evolution in Relativistic Heavy Ion Collision

Tewodros Gezhagn, A. K. Chaubey

摘要:

在iEBE-VISHNU框架下研究了相对论重离子碰撞中粒子流的弯曲。应用麦克斯韦方程组计算了库仑(EC)、洛伦兹(EL)、法拉第(EF)和等离子体基四种电力源的粒子的增量漂移速度和椭圆流的变化。我们发现,场的演化在较低的横向动量时引起流动,在较高的横向动量时抑制流动。较重的粒子得到较高的初始推力,粒子和它们的反粒子得到大致相同的椭圆流变化。此外,椭圆流被发现,表现出不同的百分比增加不同的碰撞能量。总之,本研究表明,除了电磁场的列入,碰撞能量的增加影响的椭圆流的粒子在整个演化的非均匀的方式。需要通过软化我们所做的许多粗略假设并保持参数的功能性来进一步研究,以更好地理解电磁场的演化及其对所创建系统的影响。

英文摘要:

The bending of flow of identified particles from the relativistic heavy-ion collision is investigated using the iEBE-VISHNU framework. The Maxwell's equations are applied to compute the incremental drift velocity and the change in the elliptic flow of particles from the four sources of the electric force, which are of coulomb (EC), Lorentz (EL), Faraday (EF) and Plasma-based. We find out that the field evolution arouses flow at lower transverse momentum and suppresses it at higher. Heavier particles get higher initial push, and particles and their anti-particles get crudely the same elliptic flow changes. Moreover, elliptic flow is found to show different percentage increase for different collision energies. To conclude, the present study shows that besides the inclusion of electromagnetic fields, the increase in collision energy affects the elliptic flow of particles in a non-uniform fashion throughout the evolution. Further study by softening many of the crude assumptions we made and keeping the functionality of parameters is needed to establish a better understanding of the electromagnetic field evolution and its effects on the created system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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