Spatially Assisted Schwinger Mechanism and Magnetic Catalysis

Abstract

Using the worldline formalism we compute an effective action for fermions under a temporally modulated electric field and a spatially modulated magnetic field. It is known that the former leads to an enhanced Schwinger Mechanism, while we find that the latter can also result in enhanced particle production and even cause a reorganization of the vacuum to acquire a larger dynamical mass in equilibrium which spatially assists the Magnetic Catalysis.

This is an erratum applied version to PRL117, 081603 (2016). We found a sign mistake and wrote an erratum with a conclusion that the central results are not changed once spatially decreasing magnetic fields are replaced with increasing ones. The Gaussian approximation leading to a wrong answer has also been improved to a systematic perturbative evaluation

References in corpus (9)

• The Chiral Magnetic Effect
• Dynamically assisted Schwinger mechanism
• The QCD equation of state in background magnetic fields
• The Schwinger mechanism and graphene
• Barrier control in tunneling e^+ e^- photoproduction
• Multi-particle Production and Thermalization in High-Energy QCD
• Strong laser fields as a probe for fundamental physics
• Chiral gap effect in curved space
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• Franz-Keldysh effect in strong-field QED
• Doubly assisted Sauter-Schwinger effect
• Dynamically assisted Schwinger mechanism and chirality production in parallel electromagnetic field
• Signatures of the Schwinger mechanism assisted by a fast-oscillating electric field
• Lefschetz-thimble inspired analysis of the Dykhne-Davis-Pechukas method and an application for the Schwinger Mechanism
• The electromagnetic field effects in in-out and in-in formalisms
• Euclidean mirrors: enhanced vacuum decay from reflected instantons
• Chiral anomaly in a (1+1)-dimensional Floquet system under high-frequency electric fields
• Chiral symmetry breaking in a semi-localized magnetic field