Back زمن تخيلي Arabic Temps imaginari Catalan Tiempo imaginario Spanish زمان موهومی Persian Imaginaariaika Finnish Temps imaginaire French Tempo immaginario Italian 虚時間 Japanese Czas urojony Polish Tempo imaginário Portuguese
Imaginary time is a mathematical representation of time that appears in some approaches to special relativity and quantum mechanics. It finds uses in certain cosmological theories.
Mathematically, imaginary time is real time which has undergone a Wick rotation so that its coordinates are multiplied by the imaginary unit i. Imaginary time is not imaginary in the sense that it is unreal or made-up, it is simply expressed in terms of imaginary numbers.