Nuclear Decay Parameter Oscillations as Possible Signal of Quantum-Mechanical Nonlinearity

Several experimental groups reported the evidence of periodic modulations of nuclear decay constants which amplitudes are of the order 10− 3 and periods of one year, 24 hours or about one month. We argue that such deviations from radioactive decay law can be described in nonlinear quantum mechanics framework, in which decay process obeys to nonlinear Shroedinger equation. Possible corrections to Hamiltonian of quantum system interaction with gravitation field considered. It’s shown that modified Doebner-Goldin model predicts decay parameter variations under influence of Sun gravity similar to experimental results for nuclear α-decay life-time oscillations.