# Entanglement problem of a proton-proton collision in the weak field limit

Comments: 18 pages, 8 figures. arXiv admin note: text overlap with arXiv:1602.06937

We study the entanglement problem of a proton-proton collision in the weak field limit in the presence of a scale factor. We find that the entanglement propagation in the weak field limit has a special behavior for the proton-proton system and that the photon permeability has a special behavior for the proton-proton system.