Plasma physics in strong-field regimes: Theories and simulations

Yuan Shi, Hong Qin, Nathaniel J. Fisch

Research output: Contribution to journalArticlepeer-review

Abstract

In strong electromagnetic fields, unique plasma phenomena and applications emerge whose description requires recently developed theories and simulations [Y. Shi, Ph.D. thesis, Princeton University (2018)]. In the classical regime, to quantify effects of strong magnetic fields on three-wave interactions, a convenient formula is derived by solving the fluid model to the second order in general geometry. As an application, magnetic resonances are exploited to mediate laser pulse compression, whereby higher intensity pulses can be produced in wider frequency ranges, as confirmed by particle-in-cell simulations. In even stronger fields, relativistic-quantum effects become important, and a plasma model based on scalar quantum electrodynamics (QED) is developed which unveils observable corrections to Faraday rotation and cyclotron absorption in strongly magnetized plasmas. Beyond the perturbative regime, lattice QED is extended as a numerical tool for plasma physics, using which the transition from wakefield acceleration to electron-positron pair production is captured when laser intensity exceeds the Schwinger threshold.

Original languageEnglish (US)
Article number042104
JournalPhysics of Plasmas
Volume28
Issue number4
DOIs
StatePublished - Apr 1 2021

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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