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Updated: Jan 17, 2026
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Spatial Separation of Molecular Conformers and Clusters
Published on: January 9, 2014
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Fast matter-antimatter separation via Weibel-induced plasma filamentation
Oliver Mathiak1, Lars Reichwein1,2, Alexander Pukhov1
1Heinrich-Heine-Universität Düsseldorf, Institut für Theoretische Physik I, 40225 Düsseldorf, Germany.
Physical Review. E
|September 16, 2025
Summary
Weibel instability rapidly separates matter and antimatter in plasmas. Particle-in-cell simulations confirm this phenomenon in proton-antiproton and lepton plasmas, driven by external forces.
Area of Science:
- Plasma physics
- Astrophysics
- Particle physics
Background:
- Matter-antimatter plasmas are crucial in early universe cosmology and high-energy astrophysical phenomena.
- Understanding separation mechanisms is key to explaining observed asymmetries.
Purpose of the Study:
- To investigate the role of Weibel instability in separating matter and antimatter.
- To model the dynamics of a specific matter-antimatter plasma configuration.
Main Methods:
- Utilizing particle-in-cell (PIC) simulations to model plasma behavior.
- Developing and applying an analytical model based on linearized magnetohydrodynamics (MHD).
Main Results:
- Demonstrated rapid onset of Weibel-type instability.
- Observed distinct spatial separation of matter and antimatter components.
- Validated simulation results against the analytical MHD model.
Conclusions:
- Weibel instability is an effective mechanism for matter-antimatter separation in relevant plasma conditions.
- The study provides a framework for understanding charge separation in astrophysical plasmas.
- Confirms the predictive power of PIC simulations and MHD models in this context.
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