The large odd-even difference in moments of inertia between the SD bands l95Tl(l,2)and l96Pb(l)is investigated by the particle-number conserving method,in which the blocking effect on pairing is taken into account str...The large odd-even difference in moments of inertia between the SD bands l95Tl(l,2)and l96Pb(l)is investigated by the particle-number conserving method,in which the blocking effect on pairing is taken into account strictly.Theωvariation of J(2)for the three SD bands are reproduced quite well and the underlying microscopic mechanism is demonstrated clearly.Calculations show that the blocking of the proton[642]5/2 intruder orbital and the excitation of[651]1/2 intruder orbital play crucial roles for the odd-even difference in J(2)’s.展开更多
It is shown that only the maximally entangled two-particle(spin 1/2)states whose one-particle reduced density matrix isρ(i)=(1/2)I2 can realize the teleportation of an arbitrary one-particle spin state.Based on this,...It is shown that only the maximally entangled two-particle(spin 1/2)states whose one-particle reduced density matrix isρ(i)=(1/2)I2 can realize the teleportation of an arbitrary one-particle spin state.Based on this,to teleport an arbitrary k-particle spin state,one must prepare an N-particle entangled state whose k-particle(k<N)reduced density matrix has the structure 2-kI2k(I2k being the 2k x 2k identity matrix).The N-particle Greenberger-Horne-Zeilinger states cannot realize the teleportation of an arbitrary k-particle(N>k≥2)state,except for special states with only two components.展开更多
Using the particle-number-conserving method we show that the observed downturn of J(2) of the superdeformed band 194Hg(1) can be satisfactorily accounted for, provided that both the monopole and quadrupole pairing int...Using the particle-number-conserving method we show that the observed downturn of J(2) of the superdeformed band 194Hg(1) can be satisfactorily accounted for, provided that both the monopole and quadrupole pairing interaction are included in the cranked shell model Hamiltonian.展开更多
By using various approaches to the spin assignment, including the best-fit-method, the variation of moment of inertia with angular momentum, the bandhead moment of inertia J0 systematics, and the signature systematics...By using various approaches to the spin assignment, including the best-fit-method, the variation of moment of inertia with angular momentum, the bandhead moment of inertia J0 systematics, and the signature systematics, the spin of the lowest level observed in the first discovered superdeformed band 152Dy(1)is definitely predicted to be I0 = 26(Eγ(I0 + 2 → I0) = 602.4 keV), rather than the previously predicted I0 = 22,24, or 25. The spin prediction and properties of some superdeformed bands in the A ~ 150 region are discussed.展开更多
It is shown that for a particle with suitable angular momenta in the screened Coulomb potential or isotropic harmonic potential, there still exist closed orbits rather than ellipse, characterized by the conserved aphe...It is shown that for a particle with suitable angular momenta in the screened Coulomb potential or isotropic harmonic potential, there still exist closed orbits rather than ellipse, characterized by the conserved aphelion and perihelion vectors, i.e. extended Runge-Lenz vector, which implies a higher dynamical symmetry than the geometrical symmetry O_(3). The closeness of a planar orbit implies the radial and angular motional frequencies are commensurable.展开更多
In axially symmetric nuclei,three forms of paired states can be constructed,i.e.,monopole pair,signature pair and±Ωpair,which are the eigenstates of(J^(2),Jz),(J^(2)_(z),R_(x)(π)),and Jz,respectively.In the cra...In axially symmetric nuclei,three forms of paired states can be constructed,i.e.,monopole pair,signature pair and±Ωpair,which are the eigenstates of(J^(2),Jz),(J^(2)_(z),R_(x)(π)),and Jz,respectively.In the cranked shell model,though the energy spectra atω=0 are the same for three types of pair interactions,the spectra and spin alignments forω≠0 are different to a certain extent.It is found that theωvariation of the pair transfer amplitude,particularly the diabolic pair transfer,is quite different for different pair interactions.展开更多
The blocking effect on the nuclear pairing correlation in combination with some small change of the single-particle level scheme near the•Fermi surface may lead to a large Coriolis attenuation.
文摘The large odd-even difference in moments of inertia between the SD bands l95Tl(l,2)and l96Pb(l)is investigated by the particle-number conserving method,in which the blocking effect on pairing is taken into account strictly.Theωvariation of J(2)for the three SD bands are reproduced quite well and the underlying microscopic mechanism is demonstrated clearly.Calculations show that the blocking of the proton[642]5/2 intruder orbital and the excitation of[651]1/2 intruder orbital play crucial roles for the odd-even difference in J(2)’s.
基金Supported by the National Natural Science Foundation of China under Grant No.10047001.
文摘It is shown that only the maximally entangled two-particle(spin 1/2)states whose one-particle reduced density matrix isρ(i)=(1/2)I2 can realize the teleportation of an arbitrary one-particle spin state.Based on this,to teleport an arbitrary k-particle spin state,one must prepare an N-particle entangled state whose k-particle(k<N)reduced density matrix has the structure 2-kI2k(I2k being the 2k x 2k identity matrix).The N-particle Greenberger-Horne-Zeilinger states cannot realize the teleportation of an arbitrary k-particle(N>k≥2)state,except for special states with only two components.
基金Supported by the National Natural Science Foundation of China under Grant No.19675002.
文摘Using the particle-number-conserving method we show that the observed downturn of J(2) of the superdeformed band 194Hg(1) can be satisfactorily accounted for, provided that both the monopole and quadrupole pairing interaction are included in the cranked shell model Hamiltonian.
基金the Doctoral Program Foundation of Institution of Higher Educationthe National Natural Science Foundation of China under Grant No.19675002.
文摘By using various approaches to the spin assignment, including the best-fit-method, the variation of moment of inertia with angular momentum, the bandhead moment of inertia J0 systematics, and the signature systematics, the spin of the lowest level observed in the first discovered superdeformed band 152Dy(1)is definitely predicted to be I0 = 26(Eγ(I0 + 2 → I0) = 602.4 keV), rather than the previously predicted I0 = 22,24, or 25. The spin prediction and properties of some superdeformed bands in the A ~ 150 region are discussed.
基金the National Natural Science Foundation of China under Grant No.19675002Nonlinear Science Project of China,Post-Doctoral FoundationDoctoral Program Foundation of Education Committee of China.
文摘It is shown that for a particle with suitable angular momenta in the screened Coulomb potential or isotropic harmonic potential, there still exist closed orbits rather than ellipse, characterized by the conserved aphelion and perihelion vectors, i.e. extended Runge-Lenz vector, which implies a higher dynamical symmetry than the geometrical symmetry O_(3). The closeness of a planar orbit implies the radial and angular motional frequencies are commensurable.
文摘In axially symmetric nuclei,three forms of paired states can be constructed,i.e.,monopole pair,signature pair and±Ωpair,which are the eigenstates of(J^(2),Jz),(J^(2)_(z),R_(x)(π)),and Jz,respectively.In the cranked shell model,though the energy spectra atω=0 are the same for three types of pair interactions,the spectra and spin alignments forω≠0 are different to a certain extent.It is found that theωvariation of the pair transfer amplitude,particularly the diabolic pair transfer,is quite different for different pair interactions.
文摘The blocking effect on the nuclear pairing correlation in combination with some small change of the single-particle level scheme near the•Fermi surface may lead to a large Coriolis attenuation.
