Search for: [Abstract = "We study the properties of time evolution of the K0 − K0 system in spectral formulation. Within the one\-pole model we find the exact form of the diagonal matrix elements of the effective Hamiltonian for this system. It appears that, contrary to the Lee\-Oehme\-Yang \(LOY\) result, these exact diagonal matrix elements are different if the total system is CPT\-invariant but CP\-noninvariant."]
