http://en.wikipedia.org/wiki/Wick_rotation
and there was this on HN some time ago
https://news.ycombinator.com/item?id=8377680
Though I didn't find Scott Aaronson to be as clear as the professor who finally showed us the Wick rotation. Unfortunately he passed away a few years back right after having missed being awarded the Nobel prize by an inch.
https://en.wikipedia.org/wiki/Nicola_Cabibbo
http://en.wikipedia.org/wiki/Wick_rotation
and there was this on HN some time ago
https://news.ycombinator.com/item?id=8377680
Though I didn't find Scott Aaronson to be as clear as the professor who finally showed us the Wick rotation. Unfortunately he passed away a few years back right after having missed being awarded the Nobel prize by an inch.
https://en.wikipedia.org/wiki/Nicola_Cabibbo