Zobrazeno 1 - 10
of 82
pro vyhledávání: '"Ginocchio, Joseph N."'
Autor:
Ginocchio, Joseph N
Pseudospin symmetry has been useful in understanding atomic nuclei. We review the arguments that this symmetry is a relativistic symmetry. The condition for this symmetry is that the sum of the vector and scalar potentials in the Dirac Hamiltonian is
Externí odkaz:
http://arxiv.org/abs/1410.1453
Autor:
Ginocchio, Joseph N
Publikováno v:
J.Phys.Conf.Ser.267:012037,2011
The Dirac Hamiltonian with relativistic scalar and vector harmonic oscillator potentials has been solved analytically in two limits. One is the spin limit for which spin is an invariant symmetry of the the Dirac Hamiltonian and the other is the pseud
Externí odkaz:
http://arxiv.org/abs/1007.2399
Autor:
Ginocchio, Joseph N.
Pseudospin symmetry is approximately conserved in nuclei. Normally shell model interactions are written in terms of spin an orbital angular momentum operators, not in terms of pseudospin and pseudo-orbital angular momentum operators. We determine the
Externí odkaz:
http://arxiv.org/abs/1006.5954
Autor:
Ginocchio, Joseph N.
Publikováno v:
Phys.Rev.Lett. 95 (2005) 252501
We show that a Dirac Hamiltonian with equal scalar and vector harmonic oscillator potentials has not only a spin symmetry but an U(3) symmetry and that a Dirac Hamiltonian with scalar and vector harmonic oscillator potentials equal in magnitude but o
Externí odkaz:
http://arxiv.org/abs/nucl-th/0512050
Autor:
Ginocchio, Joseph N.
Publikováno v:
Phys.Rev.C69:034318,2004
The eigenfunctions and eigenenergies for a Dirac Hamiltonian with equal scalar and vector harmonic oscillator potentials are derived. Equal scalar and vector potentials may be applicable to the spectrum of an antinucleion imbedded in a nucleus. Triax
Externí odkaz:
http://arxiv.org/abs/nucl-th/0503064
Autor:
Ginocchio, Joseph N., Leviatan, A.
We consider properties of critical points in the interacting boson model, corresponding to flat-bottomed potentials as encountered in a second-order phase transition between spherical and deformed $\gamma$-unstable nuclei. We show that intrinsic stat
Externí odkaz:
http://arxiv.org/abs/nucl-th/0305013
Autor:
Ginocchio, Joseph N.
Publikováno v:
Nucl.Phys. A690 (2001) 41-51
We review the status of quasi-degenerate doublets in nuclei, called pseudospin doublets, which were discovered about thirty years ago and the origins of which have remained a mystery, until recently. We show that pseudospin doublets originate from an
Externí odkaz:
http://arxiv.org/abs/nucl-th/0012078
Publikováno v:
Phys.Rev.Lett.86:204-207,2001
Experimental data indicate small spin-orbit splittings in hadrons. For heavy-light mesons we identify a relativistic symmetry that suppresses these splittings. We suggest an experimental test in electron-positron annihilation. Furthermore, we argue t
Externí odkaz:
http://arxiv.org/abs/hep-ph/0002094
Autor:
Ginocchio, Joseph N.
Publikováno v:
Phys.Rev.Lett. 82 (1999) 4599-4602
We re-examine a symmetry in nucleon - nucleus scattering that previously had been proclaimed to be dead. We show that this symmetry is the continuum analog of pseudospin symmetry, a relativistic symmetry which manifests itself in the spectra of nucle
Externí odkaz:
http://arxiv.org/abs/nucl-th/9901022
Autor:
Ginocchio, Joseph N.
Publikováno v:
Phys.Rept. 315 (1999) 231-240
We review the status of a quasi - degenerate doublets in nuclei, called pseudospin doublets, which were discovered about thirty years ago and the origins of which have remained a mystery, until recently. We show that pseudospin doublets originate fro
Externí odkaz:
http://arxiv.org/abs/nucl-th/9812035