On pseudospin symmetry of Dirac states
2013 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 87, no 2, 025004- p.Article in journal (Refereed) Published
Some aspects of pseudospin symmetry for bound Dirac particle states of finite potentials vanishing as r -> +infinity are discussed. Energy states showing pseudospin symmetry are of interest in nuclear spectroscopy for states explained by a single nucleon interacting with a heavy nucleus. Such states may be approximated by Dirac theory as Dirac particle states with positive relativistic energies and/or Dirac anti-particles with negative relativistic energies. It is confirmed, in this study of an exponential-shaped potential model of vector, scalar and tensor interactions, that positive-energy pseudospin symmetric Dirac states exist in relativistic quantum mechanics, but not in the Schrodinger theory, and that tensor coupling may play an important role in the pseudospin symmetry.
Place, publisher, year, edition, pages
2013. Vol. 87, no 2, 025004- p.
Dirac particles, Dirac theory, Heavy nucleus, Nuclear spectroscopy, Potential Model, Pseudospin, Relativistic energy, Relativistic quantum mechanics, Tensor interaction
IdentifiersURN: urn:nbn:se:kth:diva-119118DOI: 10.1088/0031-8949/87/02/025004ISI: 000314810400004ScopusID: 2-s2.0-84873326353OAI: oai:DiVA.org:kth-119118DiVA: diva2:610438
QC 201303112013-03-112013-03-072013-03-11Bibliographically approved