Non-cancellation of the parity anomaly in the strong-field regime of QED2+1

• Verfasst von: Ott, Robert [VerfasserIn]
• Verfasst von: Zache, Torsten Victor [VerfasserIn]
• Verfasst von: Berges, Jürgen [VerfasserIn]
• Titel: Non-cancellation of the parity anomaly in the strong-field regime of QED2+1
• Verf.angabe: R. Ott, T.V. Zache, N. Mueller, J. Berges
• E-Jahr: 2020
• Jahr: 5 May 2020
• Umfang: 5 S.
• Fussnoten: Im Titel ist der Ausdruck "2+1" tiefgestellt ; Gesehen am 13.08.2020
• Titel Quelle: Enthalten in: Physics letters / B
• Ort Quelle: Amsterdam : North-Holland Publ., 1967
• Jahr Quelle: 2020
• Band/Heft Quelle: 805(2020) Artikel-Nummer 135459, 5 Seiten
• ISSN Quelle: 1873-2445
• DOI: doi:10.1016/j.physletb.2020.135459
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Anomalies
• Sach-SW: Non-equilibrium field theory
• Sach-SW: QED
• K10plus-PPN: 1727030087

Abstract

Quantum fluctuations lead to an anomalous violation of parity symmetry in quantum electrodynamics for an even number of spatial dimensions. While the leading parity-odd electric current vanishes in vacuum, we uncover a non-cancellation of the anomaly for strong electric fields with distinct macroscopic signatures. We perform real-time lattice simulations with fully dynamical gauge fields and Wilson fermions in 2+1 space-time dimensions. In the static field limit, relevant at early times, we solve the problem analytically. Our results point out the fundamental role of quantum anomalies for strong-field phenomena, relevant for a wide range of condensed matter and high-energy applications, but also for the next generation of gauge theory quantum simulators.