UTAPwiki/セミナー/初期宇宙・相対論速報

Title: Chirality generation via Schwinger Effect -real time description for CME-

Speaker: Jun'ya Kume

Abstract: The Chiral Magnetic Effect (CME) predicts electric current is induced by a magnetic field in the left-right asymmetric fermion background. Asymmetry of the background, or the transportation coefficient is conventionally expressed by the so-called chiral chemical potential. Due to such a proportionality, CME current is sometimes misunderstood as an equilibrium response, but it is not the case. In this talk, I will give a review on the Schwinger pair production with parallel E and B. Such a field configuration generates chiral asymmetry and chiral chemical potential does not enter in the production rate. In order to clarify the real-time nature of the CME, in-in evaluation of the chiral charge and the electric current is performed in such a system.

References:
[1]P. Copinger, K. Fukushima and Shi Pu, Phys.Rev.Lett. 121 (2018) 26, 261602
[2]P. Copinger and Shi Pu, Int.J.Mod.Phys.A 35 (2020) 28, 2030015
[3]G. V. Dunne, hep-th/0406216[hep-th]


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Last-modified: 2021-11-04 (木) 09:35:11 (201d)