- #1

mjda

- 13

- 0

The inner product of the 4-momentum vector with itself, is an invariant quantity. If we define the 4-momentum vector, P, as:

**P = (p''' , iE/c)**---- where p''' is just the 3 dimensional momentum vector.

This then leads to finding:

**P.P = p**<-- this is invariant

^{2}- (E/c)^{2}The 4-wave vector, N, is defined as:

**N = f (c/w , 1)**<-- how does one derive this?

From what I have read, you should be able to derive the de Broglie equation by considering the inner product of P and N, with P.P?

The result being:

**cP = hN**

*Has anyone seen this notation before and able to show this result is true? I can't find it anywhere in this form!*