CPT and Quantum Mechanics Tests with Kaons: Theory

In this brief review talk I first discuss some theoretical motivations for potential CPT Violation and deviations from ordinary quantum mechanical behavior of field theoretic systems in the background of some quantum gravity models. Then I proceed to a description of precision tests of CPT symmetry using neutral and charged Kaons. I emphasize the possibly unique rôle of neutral meson factories in providing specific tests of models in which the CPT quantum mechanical operator is not well defined, leading to modifications of Einstein-Podolsky-Rosen (EPR) particle correlators.