In quantum mechanics, the phase velocity is f/k=E/p because of E=hf and p=hk where k=1/wavelength.(adsbygoogle = window.adsbygoogle || []).push({});

In special relativity, E=mc^2 and p=mV (V<c). So, E/p=cc/V >c.

To photons in media, however, the phase velocity is f/k =c/n<c.

What’s wrong ?

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# Contradiction between Quantum Mechanics and Special Relativity？

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