From: utzoo!decvax!harpo!uwvax!doug Newsgroups: net.misc Title: Re: Spontaneous particles from vacuum?!?? Article-I.D.: uwvax.538 Posted: Sat Aug 7 21:33:52 1982 Received: Sun Aug 8 03:11:26 1982 References: ihnss.128 I should mention that the spontaneous decay of vacuums into non-virtual particles would only be in the vicinity of an extremely highly charged nucleus. In this vicinity, the SA article maintains that it would be energetically desirable for such decay to occur. The nuclei required, if I remember correctly, have proton numbers > 200. Experiments are being conducted to create (albeit for a short time) such nuclei.