Alfvén-Klein Ambiplasma Cosmology
The universe contains equal matter and antimatter separated by electromagnetic fields, with no Big Bang.
Placeholder for a 3D visualisation of Plasma Cosmology. The interactive scene will land in Phase 3. Plasma cosmology is a family of alternative cosmologies developed by Hannes Alfvén, Oskar Klein, Anthony Peratt, Eric Lerner and others. It argues that since most baryonic matter in the universe is in plasma form, electromagnetic forces and plasma physics should dominate cosmic structure formation rather than gravity. Various versions reject the Big Bang entirely, propose matter-antimatter symmetric universes, or claim Birkeland currents shape galaxies and filaments. None has produced a quantitative fit to the full suite of cosmological data, and the field has been largely abandoned by mainstream physics since the 1990s.
In one sentence
Alfvén and Klein in the 1960s and 1970s proposed an eternal universe with matter and antimatter ('ambiplasma') separated by large-scale electromagnetic fields, where cosmic expansion arises from annihilation processes rather than from a hot singular beginning.
The claim
Hannes Alfvén, a pioneer of magnetohydrodynamics and 1970 Nobel laureate, with Oskar Klein, proposed a cosmology in which the universe contains roughly equal amounts of matter and antimatter separated into regions by large-scale electromagnetic fields. They introduced the concept of ambiplasma, a plasma composed of both ordinary matter and antimatter, and envisioned cosmic structure shaped by large-scale electric currents and magnetic fields.
The model is eternal with no Big Bang. Cosmic expansion is attributed to processes involving matter-antimatter annihilation and plasma dynamics, not an initial hot singularity. Alfvén's Nobel Prize was for his foundational MHD work, not for his cosmological ideas, but proponents often cite the prize as evidence that mainstream cosmology under-appreciated plasma physics on cosmic scales.
The family stance
The universe is structured by plasma physics and electromagnetic forces operating on cosmic scales. There is no singular beginning; cosmic structure arises from current sheets and plasma instabilities rather than gravitational collapse from a hot Big Bang.
Predictions
- Large-scale matter-antimatter segregation by electromagnetic fields
- Annihilation radiation at boundaries between matter and antimatter regions
- No primordial hot phase, hence no Big Bang relics
Evidence
- Rooted in well-established plasma physics on smaller scales
- Identified the dominance of plasma in cosmic matter, which is observationally correct
Counterpoints
- No observational evidence of large-scale matter-antimatter segregation or annihilation radiation has been found
- Cannot account for the CMB's blackbody spectrum and anisotropies
- Has been overshadowed by mainstream Big Bang cosmology with no demonstrated quantitative success on cosmological data
Variants in this family
▸Go deeperTechnical detail with proper terminology
References
- EstablishedAlfvén (1966) Worlds-Antiworlds: Antimatter in Cosmology, Freeman
- EstablishedAlfvén (1981) Cosmic Plasma, Reidel
Last reviewed May 15, 2026
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