I am told that if an electric field is strong enough that it can polarize the vacuum enough to created positrons and electrons. Also, if quarks are separated enough, then the potential energy creates other quarks. My question is can the reverse happen, are particles ever absorbed back into a potential field that created them? I suppose you'd have to have in that field a particle-antiparticle that meet up and annihilate but instead of producing some other particle like a photon that flies off, the energy of their annihilation would be absorbed into the field. Although, I don't remember ever hearing about this kind of absorption. When created by too strong of a field, the particle/antiparticle pair are entangled. But when they randomly come together within the field, having come from different locations and annihilate, they are not entangled, and maybe that implies that they cannot disappear into the field making it stronger; they must produce some other particles that flies off as it would do if it were not in a field. Does anyone have more insight into this?