Abstract
The fragmentation of one-phonon states in hot nuclei is studied. For this purpose, the quasiparticle-phonon nuclear model is extended to a finite temperature by applying the formalism of thermo field dynamics. It is shown that consistent application of the thermal state condition leads to the realization of the detailed balance principle at each stage of the thermal Hamiltonian diagonalization. The equations describing the coupling between thermal one-phonon and two-phonon states are derived.
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Dzhioev, A.A., Vdovin, A.I. Thermodynamically Consistent Description of One-Phonon States Fragmentation in Hot Nuclei. Phys. Part. Nuclei Lett. 18, 629–639 (2021). https://doi.org/10.1134/S1547477121060054
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DOI: https://doi.org/10.1134/S1547477121060054