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## Main Question or Discussion Point

I don't know what the speed of light

[itex]\hat{H}=\dfrac{\hat{p}^2_x}{2m}+\dfrac{1}{2m}\left(\hat{p}_y-\dfrac{q|\vec{B}|}{c}\hat{x}\right)^2[/itex]

Any ideas?

thanks.

**c**is doing in the Hamiltonian for the Landau quantization. The term doesn't have dimensions of momentum anymore.[itex]\hat{H}=\dfrac{\hat{p}^2_x}{2m}+\dfrac{1}{2m}\left(\hat{p}_y-\dfrac{q|\vec{B}|}{c}\hat{x}\right)^2[/itex]

Any ideas?

thanks.