(adsbygoogle = window.adsbygoogle || []).push({}); Teacher said "Stupid Question"

We were learning about Dirac's relativistic equation. The teacher wrote on the

board:

Free Particle Dirac Equation:

[tex][ \alpha \cdot \bold {p}c + \beta mc^2]\psi = -\frac{\hbar}{i}\frac{\partial\psi}{\partial t}[/tex]

Then the teacher said "if we want to add a potential V we just write:"

[tex][ \alpha \cdot \bold {p}c + \beta mc^2 + \bold{V}]\psi = -\frac{\hbar}{i}\frac{\partial \psi}{\partial t}[/tex]

My hand shot up and I said "what if [tex]V = \frac{-GMm}{x}[/tex]" would that represent gravity?"

Teacher set his chalk down, smirked condescendingly, and mumbled something about "coupling" and "gravitaons" and yada yada blah blah blah.

So I turn to you, dear friends, what am I not being told about gravity that makes it ... special?

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# Teacher said Stupid Question

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