scholarly journals Multipole excitations in hot nuclei within the finite temperature quasiparticle random phase approximation framework

2017 ◽  
Vol 96 (2) ◽  
Author(s):  
E. Yüksel ◽  
G. Colò ◽  
E. Khan ◽  
Y. F. Niu ◽  
K. Bozkurt
Keyword(s):  
Finite Temperature ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Quasiparticle Random Phase Approximation ◽  
Hot Nuclei

scholarly journals THE TFD TREATMENT OF THE QUASIPARTICLE-PHONON INTERACTION AT FINITE TEMPERATURE

1994 ◽  
Vol 09 (19) ◽  
pp. 1735-1743 ◽  
Author(s):  
D.S. KOSOV ◽  
A.I. VDOVIN
Keyword(s):  
Finite Temperature ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Elementary Excitation ◽  
Nuclear Model ◽  
Phase Approximation ◽  
Thermal Phonon ◽  
Phonon Interaction ◽  
Coupling Matrix ◽  
Hot Nuclei

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 HQPM 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.

scholarly journals RENORMALIZED RPA AT FINITE TEMPERATURE

1996 ◽  
Vol 11 (10) ◽  
pp. 853-859 ◽  
Author(s):  
A.V. AVDEENKOV ◽  
D.S. KOSOV ◽  
A.I. VDOVIN
Keyword(s):  
Finite Temperature ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Numerical Results ◽  
Collective Excitations ◽  
Phase Approximation ◽  
Hot Nuclei ◽  
Occupation Numbers

A method taking account of a deviation of state occupation numbers from the thermal RPA prescriptions is elaborated to study collective excitations in hot nuclei. This thermal renormalized random phase approximation (TRRPA) is from Ken-Ji Hara and D.J. Rowe. In developing the TRRPA, a formalism of the thermofield dynamics (TFD) is used. Some numerical results are given for the SU(2) model.

Neutrino reactions onC12by the quasiparticle random-phase approximation (QRPA)

2010 ◽  
Vol 81 (2) ◽  
Author(s):  
Myung-Ki Cheoun ◽  
Eunja Ha ◽  
Su Youn Lee ◽  
K. S. Kim ◽  
W. Y. So ◽  
...  
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Quasiparticle Random Phase Approximation
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