Giddings, Steven B.; Wilczek, Frank Spontaneous fact violation. (English) Zbl 1020.83577 Mod. Phys. Lett. A 5, No. 9, 635-643 (1990). MSC: 83C47 Methods of quantum field theory in general relativity and gravitational theory PDFBibTeX XMLCite \textit{S. B. Giddings} and \textit{F. Wilczek}, Mod. Phys. Lett. A 5, No. 9, 635--643 (1990; Zbl 1020.83577) Full Text: DOI