Physicists model quantum mechanics with real numbers only
Physicists created a quantum model using only real numbers, matching standard predictions, simplifying calculations. This could reduce costs in developing quantum technologies and make the subject eas
Physicists have built the first working quantum model that relies only on “real” numbers—no imaginary ones—and still matches every prediction of stand
Read Full Story at Live Science →Why This Matters
The breakthrough challenges a century-old assumption in quantum mechanics, proving that complex numbers—long considered indispensable for describing quantum states—can be replaced with real numbers without sacrificing accuracy. This simplification could democratize access to quantum computing, making it easier for researchers and engineers to model and develop quantum technologies without relying on specialized mathematical tools.
Background Context
Since the early 20th century, quantum mechanics has relied on complex numbers to represent wavefunctions and probability amplitudes, a tradition rooted in the Schrödinger equation and Heisenberg’s matrix mechanics. The mathematical elegance of complex numbers has also made them a cornerstone of quantum field theory and quantum information science, reinforcing their perceived necessity in the field.
What Happens Next
Researchers may now revisit decades of quantum algorithms and simulations to assess whether real-number models can improve computational efficiency or reduce hardware requirements. If widely adopted, this approach could accelerate the development of quantum technologies by lowering the barrier to entry for smaller institutions and startups. However, questions remain about whether certain quantum phenomena—like entanglement or interference—can be fully captured without complex numbers.
Bigger Picture
The shift away from complex numbers reflects a growing trend in fundamental physics toward re-examining foundational assumptions to simplify and broaden accessibility. Similar debates have emerged in areas like quantum gravity and unified field theories, where alternative mathematical frameworks are being explored to reconcile quantum mechanics with general relativity.
