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On pseudospin symmetry of Dirac states
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0003-0149-341X
KTH, School of Engineering Sciences (SCI), Mechanics.
2013 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 87, no 2, 025004- p.Article in journal (Refereed) Published
Abstract [en]

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.
Keyword [en]
Dirac particles, Dirac theory, Heavy nucleus, Nuclear spectroscopy, Potential Model, Pseudospin, Relativistic energy, Relativistic quantum mechanics, Tensor interaction
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-119118DOI: 10.1088/0031-8949/87/02/025004ISI: 000314810400004Scopus ID: 2-s2.0-84873326353OAI: oai:DiVA.org:kth-119118DiVA: diva2:610438
Note

QC 20130311

Available from: 2013-03-11 Created: 2013-03-07 Last updated: 2017-12-06Bibliographically approved

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Thylwe, Karl-Erik

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