Renormalization the Energy of Elementary Excitations in Solids by the Strong (Nuclear) Interaction

Abstract

The experimental evidence of renormalization the energy of the elementary excitations in solids which are differ by term of one neutron from each other by the strong (nuclear) interaction has been presented for the first time. This evidence is based on two independent results: 1) The increase exciton energy on 103 meV is caused by the adding of one neutron (using LiD crystals instead LiH ones); 2) After increasing the amounts by one neutron the energy of LO phonons has decreased by 36 meV. The last one is directly seen from luminescence and scattering spectra. As far as the gravitation, electromagnetic and weak interactions are the same in both of kind crystals, it only changes the strong interaction. Therefore a logical conclusion is made that the renormalization of the energy of electromagnetic excitations (excitons, phonons) is carried out by the strong (nuclear) interaction.