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arXiv 0810.5103hep-ph
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QCD真空在大磁场下的磁化

Magnetization of the QCD vacuum at large fields

Thomas D. Cohen, Elizabeth S. Werbos

摘要:

研究了QCD真空对超大静外磁场(q B >> λ_QCD ^2)的响应。在这种情况下,QCD真空的磁化自然地通过微扰QCD来描述。结合pQCD和Schwinger真时理论,我们计算了在首阶(单圈)强磁场作用下QCD真空的磁化强度与Blog B成正比。我们表明,领先的微扰校正(两个循环)消失。

英文摘要:

The response of the QCD vacuum to very large static external magnetic fields (q B >> Lambda_QCD^2) is studied. In this regime, the magnetization of the QCD vacuum is naturally described via perturbative QCD. Combining pQCD and the Schwinger proper time formalism, we calculate the magnetization of the QCD vacuum due to a strong magnetic field at leading order (one-loop) to be proportional to B log B. We show that the leading perturbative correction (two-loop) vanishes.

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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