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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 12: Quantum field theory for particle physics and plasmas

MP 12.2: Talk

Thursday, March 24, 2022, 17:35–17:55, MP-H5

Quantum Backreaction in Laser-Driven Plasma — Gudrid Moortgat-Pick, Victor Rogner, and •Ananta Effendie — University of Hamburg

Similarly to the statistical mechanics as they pertain to gases, the sets of mechanics for a plasma will need to be modeled separately from that of other states of matter.

In particular, the electrons behave as if free inside a plasma, the intense laser-pulse interactions of which are of interest in the understanding of a laser-driven plasma. In contrast to the particle-in-cell approach already explored thoroughly and canonized in EPOCH, an approach considering multi-particle effects will yield separate mathematical insights.

The proposed method of integral quantisation utilizes the action in respect to the Lagrangian and allows quantum considerations from quantum-field-theory and quantum-electrodynamics to be introduced, the effects of which are largely ignored through the particle-in-cell approach.

This yields field equations describing a laser-driven plasma, including backreactions of quantum fluctuations, which can be linearised to describe a uniform, monochromatic laser beam propagating through a uniform plasma. The resulting quantum perturbations appear non-trivial.