SIGNALQuantum·Jun 21, 2026, 10:20 PMSignal55Structural

Quantum mechanics theory may work without imaginary numbers, new analysis suggests

Quantum mechanics theory may work without imaginary numbers, new analysis suggests

Physicists from Heinrich Heine University Düsseldorf (HHU) have examined a fundamental property of quantum mechanics in collaboration with the German Aerospace Center (DLR). In an article published in the journal Physical Review Letters, they show that this theory does not necessarily need to be formulated with imaginary numbers—real numbers can, in fact, also be used.

Why this matters
Why now

This research provides a new theoretical perspective on quantum mechanics at a time when quantum computing and related technologies are experiencing significant development.

Why it’s important

A re-formulation of quantum mechanics using real numbers could simplify certain theoretical aspects and potentially lead to new computational approaches or insights into fundamental physics.

What changes

The theoretical foundation of quantum mechanics is not fundamentally altered, but a new mathematical framework is proposed for its description, potentially impacting future research directions.

Winners
  • · Theoretical physicists
  • · Quantum computing researchers
Losers
  • · None
Second-order effects
Direct

The immediate effect is a new paper offering an alternative mathematical formulation for quantum mechanics.

Second

This could inspire new algorithms or computational models for quantum systems if the real-number formulation offers practical advantages.

Third

Long-term, a simpler mathematical framework might broaden access to quantum mechanics and accelerate its integration into other scientific disciplines.

Editorial confidence: 85 / 100 · Structural impact: 10 / 100
Original report

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Read at Phys.org — Quantum Physics
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