"Last night at dinner, she spent most of the time talking about virtual particles."
"They're emerging out of the virtual particles that are already present everywhere."
The only thing they need to become "real" rather than "virtual" particles is some source of energy on which to feed.
Like virtual particles, no investigator is supposed to see this.
In other words, virtual particles drive the accelerated expansion of the Universe.
Are virtual particles really constantly popping in and out of existence?
This gives rise to virtual particles and other very esoteric ideas.
Experiments have shown that these virtual particles are indeed present, although we cannot detect them directly.
Virtual particles spring into being and disappear, vast quantities of them.
Replies: I think the simple answer is that it depends on whether or not the virtual particle has mass.