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arXiv 0810.3693hep-ph
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强磁背景能改变QCD中手性跃迁的性质吗?

Can a strong magnetic background modify the nature of the chiral transition in QCD?

Eduardo S. Fraga, Ana Júlia Mizher

摘要:

强磁背景的存在可以改变有限温度下手征相变的性质和动力学:对于足够高的磁场,与RHIC和LHC的非中心高能重离子碰撞中预期产生的磁场相当,原始的交叉转变为一级跃迁。我们在线性西格玛模型中说明了这种效应,其中夸克是$N_{f}=2$的${\rm MS}$方案中的一个环。

英文摘要:

The presence of a strong magnetic background can modify the nature and the dynamics of the chiral phase transition at finite temperature: for high enough magnetic fields, comparable to the ones expected to be created in noncentral high-energy heavy ion collisions at RHIC and the LHC, the original crossover is turned into a first-order transition. We illustrate this effect within the linear sigma model with quarks to one loop in the ${\rm MS}$ scheme for $N_{f}=2$.

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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