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Hofstadter's Butterfly at 50: Quantum Fractal Still Yielding New Physics

Fifty years after Douglas Hofstadter first plotted the intricate energy spectrum of electrons in a magnetic field, his fractal butterfly continues to appear in new materials, experiments, and even black hole physics.

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Fifty years after Douglas Hofstadter first plotted the intricate energy spectrum of electrons in a magnetic field, his fractal butterfly continues to appear in new materials, experiments, and even black hole physics.

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