Recent content by IsNoGood

Thank you for your answer SpectraCat, it was indeed helpful. After some additional research, It led me to the following conclusion: I guess what I was searching for can be best described by \vec{\sigma}\vec{A} \rightarrow \vec{\sigma}\vec{c}(t) where \vec{c}(t) is a vector of gaussian...

Hello everybody, I recently had to do with a model of a single Spin coupled to a very generic quantum mechanical bath (the actual point was finding pulses that manipulate the spin as accurate as possible despite having a finite length in time but as this doesn't have anything to do with my...

OK, did the calculation, everything is fine now.

It's astonishing how long one can stare at an expression without the slightest idea until suddenly out of nowhere it seems absolutely clear where to go. I'm not done yet because I've got something different to do, but I think I finally got the "nifty trick". Will post again if it turns out to be...

Homework Statement I'm trying to comprehend \hat{P}_t^{-1} \left( \vec{\sigma} \cdot \vec{A} \right) \hat{P}_t = \ \cos{\Psi\left(t\right)}\left( \vec{\sigma} \cdot \vec{A} \right) - \sin{\Psi\left(t\right)} \sigma \cdot \left[ \hat{a}\left(t\right) \times \vec{A} \right] +...