[Pecos_Bill (OP)]

I hope I am using the proper term. Are virtual particles those which only have a transient existence?

I remember reading "flatland" by Abbot.

Is it under consideration that these "transient" particles are passing in and out of space-time from some unknown dimension to another?

[Bill S]

This is probably a good place to start looking at virtual particles.

http://profmattstrassler.com/articles-and-posts/particle-physics-basics/virtual-particles-what-are-they/

Flatland, on the other hand, is a good place to start looking at a lot of odd things. 

[yor_on]

There are no such things as I think. Exchange it for indeterminism, with probabilities of becoming (outcomes), and I will find it easier to digest.