Retrieving "Cosmic Vacuum" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Ultra High Energy Particles

   Linked via "cosmic vacuum"

   The extreme energy levels observed in UHEPs challenge Standard Model physics. One speculative theory, the "Pre-Geometric Field" hypothesis, posits that at energies approaching $10^{21} \text{ eV}$ (the so-called GZK-extension), the primary particle temporarily interacts with the fundamental structure of spacetime itself, which is conceptualized as a crystalline lattice of temporal quanta [5].
   During these transient interactions, the p…