Zobrazeno 1 - 10
of 3 077
pro vyhledávání: '"TOHYAMA, M."'
The status of different extensions of the Random Phase Approximation (RPA) is reviewed. The general framework is given within the Equation of Motion Method and the equivalent Green's function approach for the so-called Self-Consistent RPA (SCRPA). Th
Externí odkaz:
http://arxiv.org/abs/2009.00591
The Self-Consistent RPA (SCRPA) approach is elaborated for cases with a continuously broken symmetry, this being the main focus of the present article. Correlations beyond standard RPA are summed up correcting for the quasi-boson approximation in sta
Externí odkaz:
http://arxiv.org/abs/1601.03495
Autor:
Tohyama, M., Umar, S.
To investigate the two-body dissipation effects on the synthesis of superheavy elements, we calculate low-energy collisions of the $N=50$ isotones ($^{82}$Ge, $^{84}$Se, $^{86}$Kr and $^{88}$Sr) on $^{208}$Pb using the time-dependent density-matrix t
Externí odkaz:
http://arxiv.org/abs/1512.03150
Publikováno v:
Phys.Rev. C70 (2004) 057307
The ground states and excited states of the Lipkin model hamiltonian are calculated using a new theoretical approach which has been derived from an extended time-dependent Hartree-Fock theory known as the time-dependent density-matrix theory (TDDM).
Externí odkaz:
http://arxiv.org/abs/nucl-th/0408042
Publikováno v:
Eur.Phys.J. A21 (2004) 217-225
We propose a time-independent method for finding a correlated ground state of an extended time-dependent Hartree-Fock theory, known as the time-dependent density-matrix theory (TDDM). The correlated ground state is used to formulate the small amplitu
Externí odkaz:
http://arxiv.org/abs/nucl-th/0311016
Autor:
Tohyama, M., Schuck, P.
An extended time-dependent Hartree-Fock theory, known as the time-dependent density-matrix theory (TDDM), is solved as a time-independent eigenvalue problem for low-lying $2^+$ states in $^{24}$O to understand the foundation of the rather successful
Externí odkaz:
http://arxiv.org/abs/nucl-th/0305088
Autor:
Tohyama, M., Schuck, P.
Publikováno v:
Eur.Phys.J. A19 (2004) 203-213
Necessary conditions that the spurious state associated with the translational motion and its double-phonon state have zero excitation energy in extended RPA (ERPA) theories which include both one-body and two-body amplitudes are investigated using t
Externí odkaz:
http://arxiv.org/abs/nucl-th/0305087
Autor:
Tohyama, M., Umar, A. S.
Publikováno v:
Phys.Lett. B549 (2002) 72-78
The strength functions of quadrupole modes in the unstable oxygen isotopes 22O and 24O are calculated using an extended version of the time-dependent Hartree-Fock theory known as the time-dependent density-matrix theory (TDDM). It is found that TDDM
Externí odkaz:
http://arxiv.org/abs/nucl-th/0206069
Autor:
Tohyama, M., Umar, A. S.
Publikováno v:
Phys.Lett. B516 (2001) 415-420
The strength functions of isovector dipole resonances in the even oxygen isotopes $^{18\sim24}$O are calculated by using an extended version of the time-dependent Hartree-Fock theory known as the time-dependent density-matrix theory (TDDM). The resul
Externí odkaz:
http://arxiv.org/abs/nucl-th/0104060
Autor:
Tohyama, M.
Publikováno v:
Phys.Lett. B484 (2000) 231-235
The strength functions of the DGDRs in 16O and 40Ca are calculated using an extended version of TDHF known as the time-dependent density-matrix theory (TDDM). The calculations are done in a self-consistent manner, in which the same Skyrme force as th
Externí odkaz:
http://arxiv.org/abs/nucl-th/0003034