- #1
parton
- 83
- 1
I should calculate the limit of the following fraction
[tex] \dfrac{- (pq) p^{2}}{-pq \pm \sqrt{(pq)^{2} - p^{2} q^{2}}} [/tex].
with q --> 0, but I don't know how to do that.
p and q are two four-vectors, so we have: [tex] pq = p_{\mu} q^{\mu} [/tex] and so on.
Does anyone have an idea? Or at least: Is it somehow possible to "simplify" or rewrite the expression in the limit q --> 0 ?
[tex] \dfrac{- (pq) p^{2}}{-pq \pm \sqrt{(pq)^{2} - p^{2} q^{2}}} [/tex].
with q --> 0, but I don't know how to do that.
p and q are two four-vectors, so we have: [tex] pq = p_{\mu} q^{\mu} [/tex] and so on.
Does anyone have an idea? Or at least: Is it somehow possible to "simplify" or rewrite the expression in the limit q --> 0 ?