Jump is fictional technology in the stories of an author who is known for what? 
Jump (Alliance–Union universe): Jump is a fictional technology used by spacecraft in science fiction author C. J. Cherryh's Alliance-Union universe to travel faster-than-light (FTL). C. J. Cherryh:  She has written more than 60 books since the mid-1970s, including the Hugo Award-winning novels "Downbelow Station" (1981) and "Cyteen" (1988), both set in her Alliance-Union universe. C. J. Cherryh:  She is known for "world building," depicting fictional realms with great realism supported by vast research in history, language, psychology, and archeology.
world building