Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published September 26, 1988 | public
Journal Article Open

Wormholes, time machines, and the weak energy condition


It is argued that, if the laws of physics permit an advanced civilization to create and maintain a wormhole in space for interstellar travel, then that wormhole can be converted into a time machine with which causality might be violatable. Whether wormholes can be created and maintained entails deep, ill-understood issues about cosmic censorship, quantum gravity, and quantum field theory, including the question of whether field theory enforces an averaged version of the weak energy condition.

Additional Information

©1988 The American Physical Society. Received 21 June 1988. For helpful discussions or correspondence, we thank Bruce Allen, Phillip Candelas, S. Chandrasekhar, Bryce DeWitt, Sam Finn, John Friedman, Robert Geroch, Leonard Parker, Don Page, Nicolas Papastamatiou, Thomas Roman, Carl Sagan, and Robert Wald. One of us (K.S.T.) thanks the Departments of Physics and Astronomy and the Phenomenology Group of the University of Wisconsin at Madison for hospitality during this research. This work was supported in part by National Science Foundation Grant No. AST85-14911.


Files (693.6 kB)
Name Size Download all
693.6 kB Preview Download

Additional details

August 22, 2023
October 16, 2023