Electromagnetic instability in holographic QCD

被引：0
作者：
Koji Hashimoto
Takashi Oka
Akihiko Sonoda
机构：
[1] Osaka University,Department of Physics
[2] RIKEN Nishina Center,Mathematical Physics Lab.
[3] University of Tokyo,Department of Applied Physics
来源：
Journal of High Energy Physics | / 2015卷
关键词：
Confinement; Gauge-gravity correspondence; AdS-CFT Correspondence; D-branes;
D O I：
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学科分类号：
摘要：
Using the AdS/CFT correspondence, we calculate the vacuum decay rate for the Schwinger effect in confining large Nc gauge theories. The instability is induced by thecorrespondence, we calculate the vacuum quark antiquark pair creation triggered by strong electromagnetic fields. The decay rate is obtained as the imaginary part of the Euler-Heisenberg effective Lagrangian evaluated from the D-brane action with a constant electromagnetic field in holographic QCD models such as the Sakai-Sugimoto model and the deformed Sakai-Sugimoto model. The decay rate is found to increase with the magnetic field parallel to the electric field, while it decreases with the magnetic field perpendicular to the electric field. We discuss generic features of a critical electric field as a function of the magnetic field and the QCD string tension in the Sakai-Sugimoto model.
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