With complex hoppings you will get a "phase problem" that is as bad or worse than a sign problem - the QMC codes thus do not support complex hoppings
Matthias
On 19 Jun 2009, at 12:10, Jakub Kolasinski wrote:
Dear Mr Troyer, I allow myself to use Your kindness one more time.
My question is, how can I make hopping parameter complex (if that is possible at all)? I get an error that "can not convert complex number into a real one". I'm using worm.
Thank You in advance for Your answer Jakub