The TFD treatment of the quasiparticle-phonon interaction at finite temperature
Journal Publication ResearchOnline@JCUKosov, D.S.;Vdovin, A.I.
Abstract
The coupling of elementary excitation modes in hot nuclei is studied. For this aim the quasiparticle-phonon nuclear model (QPM) is extended to a finite temperature by using the formalism of the thermofield dynamics. First the energies and structures of one-phonon states are calculated in the thermal random phase approximation and then the thermal QPM Hamiltonian H(QPM) is expressed in terms of thermal quasiparticles and thermal RPA-phonons. The equation for the energies taking into account mixing of one-and two-thermal phonon states is derived. The expression of the coupling matrix element between thermal phonons is given.
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Volume
9
ISBN/ISSN
1793-6632
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Issue
19
Pages Count
9
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Publisher
World Scientific Publishing
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EISSN
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DOI
10.1142/S0217732394001581