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In quantum mechanics, related to photon, we have these two equations as valid ones:

E = h x f

p = h / lambda

But we have in vacuum the dispersion relation c = lambda x f.

1) How these relations change when the dispersion relation change ?

2) Is it universally correct to write p = h x f / c ?

Thanks ALL

Best Regards

DaTario

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# Dispersion relation and Photonic Energy and Momentum Equations in QM

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