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arXiv 1709.09258hep-thhep-ph
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从全息模型研究2+1维磁场中的退禁闭相变

Deconfinement phase transition in a magnetic field in 2+1 dimensions from holographic models

Diego M. Rodrigues, Eduardo Folco Capossoli, Henrique Boschi-Filho

摘要:

利用全息量子色动力学(QCD)中的两个不同模型,研究了有磁场存在时$2+1$维中的退禁闭相变。工作在2+1维导致我们的{ \sl精确}的解决方案上的磁场,在3+1维的情况下,在磁场的解决方案是微扰的。作为我们的主要结果,我们预测了一个临界磁场$B_c$,其中解除限制临界温度消失。对于弱磁场意义上的$B<B_c$,我们发现,临界温度随磁场的增加而降低,表明逆磁催化(IMC)。另一方面,对于强磁场$B>B_c$,我们发现临界温度随着磁场的增加而升高,表现出磁催化作用(MC)。IMC和MC的这些结果与文献一致。

英文摘要:

Using two different models from holographic quantum chromodynamics (QCD) we study the deconfinement phase transition in $2+1$ dimensions in the presence of a magnetic field. Working in 2+1 dimensions lead us to {\sl exact} solutions on the magnetic field, in contrast with the case of 3+1 dimensions where the solutions on the magnetic field are perturbative. As our main result we predict a critical magnetic field $B_c$ where the deconfinement critical temperature vanishes. For weak fields meaning $B<B_c$ we find that the critical temperature decreases with increasing magnetic field indicating an inverse magnetic catalysis (IMC). On the other hand, for strong magnetic fields $B>B_c$ we find that the critical temperature raises with growing field showing a magnetic catalysis (MC). These results for IMC and MC are in agreement with the literature.

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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