'Complex numbers are not needed for quantum mechanics': Physicists develop quantum model that uses only 'real' numbers for first time ever - Live Science

Physicists have successfully developed a version of quantum mechanics that relies solely on real numbers rather than complex numbers. This breakthrough challenges a century-old assumption that complex numbers were essential to describing quantum interactions.
Why it matters
This discovery simplifies the mathematical foundation of quantum theory and could lead to new ways of modeling physical phenomena.
Physicists have built a real-number version of quantum mechanics that makes all the same predictions as the standard theory, resolving a question that's simmered since the field began.
This is a purely scientific report on a theoretical physics development.
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