This is called imaginary time, because it is not the kind of time we normally experience. (religion.blogs.cnn.com)
Hartle - Hawking no boundary initial condition is a mathematical construct only, relying on imaginary time. (religion.blogs.cnn.com)
Some cosmologists theorize that the Big Bang was a kind of quantum leap from some formless era of imaginary time, or from nothing at all. (religion-online.org)