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arXiv 1803.03318nucl-thhep-phnucl-ex
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重离子碰撞中相对论流体能量和守恒电荷密度的非平衡修正

Off-equilibrium corrections to energy and conserved charge densities in the relativistic fluid in heavy-ion collisions

Akihiko Monnai

摘要:

相对论性流体中的耗散过程在高能重离子碰撞产生的热QCD物质的分析中是非常重要的。在这项工作中,我认为耗散修正的能量和保守的电荷密度,这是传统上假设为零,但可能是有限的。因果耗散流体动力学制定在这些耗散电流的存在下。讨论了水动力稳定性与输运系数的关系。然后,我研究他们的现象学后果的观测值的重离子碰撞的数值模拟。结果表明,粒子谱和椭圆流可以明显修改。

英文摘要:

Dissipative processes in relativistic fluids are known to be important in the analyses of the hot QCD matter created in high-energy heavy-ion collisions. In this work, I consider dissipative corrections to energy and conserved charge densities, which are conventionally assumed to be vanishing but could be finite. Causal dissipative hydrodynamics is formulated in the presence of those dissipative currents. The relation between hydrodynamic stability and transport coefficients is discussed. I then study their phenomenological consequences on the observables of heavy-ion collisions in numerical simulations. It is shown that particle spectra and elliptic flow can be visibly modified.

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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