A Quantum Dynamics Model for LENR

Low-energy nuclear reactions (LENR) are characterized by a broad set of experimental reports that
purport the release of nuclear binding energy in metal-hydrogen systems driven in out-of-equilibrium
conditions by comparatively low-energy stimuli. This body of literature includes a wide variety of
observables (e.g., excess thermal power with correlation to helium production, high energy
charged and neutral particle emission, purported transmutation products, etc.). Recent
theoretical progress by Hagelstein has led to new insights into the coupling between nuclear and
lattice degrees of freedom and the potential for collective acceleration of DD fusion reaction rates via
nuclear excitation transfer of the mass defect fusion energy to lattice nuclei. The concept of collective
enhancement of nuclear state transitions is not new and has been demonstrated in the 15-fold
acceleration of the initial decay of a coherently excited ensemble of 57Fe nuclei.

Herein, we report on recently evolved quantum dynamical models to elucidate how the acceleration of
DD fusion transitions in a metal deuteride connects to reported LENR effects. Our models take into
account empirically identified variables of interest (e.g., deuterium loading, electron screening,
stimulation characteristics, etc.). Combinations of low-lying excited states of lattice nuclei are
considered as receiver systems of the DD fusion energy at rates higher than the D2 dephasing time and
radiative decay of lattice nuclei. Various modalities of deexcitation of lattice nuclei can explain the wide
range of experimental observations in the LENR literature