Hi all, Following up on another post - for a layman, can someone describe the status of virtual particles in Loop Quantum Gravity models? Since LQG avoid UV divergences, and has a different structure from field-based theories, are virtual particles still talked about? (in the context of closed loops in Feynman diagrams and virtual particles annihilating with real particles etc., etc.) The other important aspect, of course, is that virtual particles show up in perturbative QFT, but there still seems to be general disagreement regarding their 'reality' - even here on Physics Forums. A. Neumaier has written a great Insights post on the reality of virtual particles, and yet, in another thread on quantum foam and virtual particles, individuals seemed to place them on exactly the same footing as 'real' particles (i.e., not just terms that make sense in perturbation theory, but actual fluctuations occurring the vacuum, force mediators, etc.). I think I'm more concerned with the first answer than debating the second. J.