Out-of-equilibrium chiral magnetic effect from chiral kinetic theory

• Verfasst von: Huang, Anping [VerfasserIn]
• Verfasst von: Jiang, Yin [VerfasserIn]
• Verfasst von: Shi, Shuzhe [VerfasserIn]
• Verfasst von: Liao, Jinfeng [VerfasserIn]
• Verfasst von: Zhuang, Pengfei [VerfasserIn]
• Titel: Out-of-equilibrium chiral magnetic effect from chiral kinetic theory
• Verf.angabe: Anping Huang, Yin Jiang, Shuzhe Shi, Jinfeng Liao, Pengfei Zhuang
• E-Jahr: 2018
• Jahr: 10 February 2018
• Jahr des Originals: 2017
• Umfang: 7 S.
• Fussnoten: Available online: 13 November 2017 ; Gesehen am 30.04.2020
• Titel Quelle: Enthalten in: Physics letters / B
• Ort Quelle: Amsterdam : North-Holland Publ., 1967
• Jahr Quelle: 2018
• Band/Heft Quelle: 777(2018), Seite 177-183
• ISSN Quelle: 1873-2445
• DOI: doi:10.1016/j.physletb.2017.12.025
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 169692376X

Abstract

Recently there has been significant interest in the macroscopic manifestation of chiral anomaly in many-body systems of chiral fermions. A notable example is the Chiral Magnetic Effect (CME). Enthusiastic efforts have been made to search for the CME in the quark-gluon plasma created in heavy ion collisions. A crucial challenge is that the extremely strong magnetic field in such collisions may last only for a brief moment and the CME current may have to occur at so early a stage that the quark-gluon matter is still far from thermal equilibrium. This thus requires modeling of the CME in an out-of-equilibrium setting. With the recently developed theoretical tool of chiral kinetic theory, we make a first phenomenological study of the CME-induced charge separation during the pre-thermal stage in heavy ion collisions. The effect is found to be very sensitive to the time dependence of the magnetic field and also influenced by the initial quark momentum spectrum as well as the relaxation time of the system evolution toward thermal equilibrium. Within the present approach, such pre-thermal charge separation is found to be modest.