dorsal/arxiv
View SchemaRelating pseudospin and spin symmetries through charge conjugation and chiral transformations: the case of the relativistic harmonic oscillator
| Authors | A. S. de Castro, P. Alberto, R. Lisboa, M. Malheiro |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0604068 |
| URL | https://arxiv.org/abs/nucl-th/0604068 |
| DOI | 10.1103/PhysRevC.73.054309 |
| Journal | Phys.Rev. C73 (2006) 054309 |
Abstract
We solve the generalized relativistic harmonic oscillator in 1+1 dimensions, i.e., including a linear pseudoscalar potential and quadratic scalar and vector potentials which have equal or opposite signs. We consider positive and negative quadratic potentials and discuss in detail their bound-state solutions for fermions and antifermions. The main features of these bound states are the same as the ones of the generalized three-dimensional relativistic harmonic oscillator bound states. The solutions found for zero pseudoscalar potential are related to the spin and pseudospin symmetry of the Dirac equation in 3+1 dimensions. We show how the charge conjugation and $\gamma^5$ chiral transformations relate the several spectra obtained and find that for massless particles the spin and pseudospin symmetry related problems have the same spectrum, but different spinor solutions. Finally, we establish a relation of the solutions found with single-particle states of nuclei described by relativistic mean-field theories with scalar, vector and isoscalar tensor interactions and discuss the conditions in which one may have both nucleon and antinucleon bound states.
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"abstract": "We solve the generalized relativistic harmonic oscillator in 1+1 dimensions,\ni.e., including a linear pseudoscalar potential and quadratic scalar and vector\npotentials which have equal or opposite signs. We consider positive and\nnegative quadratic potentials and discuss in detail their bound-state solutions\nfor fermions and antifermions. The main features of these bound states are the\nsame as the ones of the generalized three-dimensional relativistic harmonic\noscillator bound states. The solutions found for zero pseudoscalar potential\nare related to the spin and pseudospin symmetry of the Dirac equation in 3+1\ndimensions. We show how the charge conjugation and $\\gamma^5$ chiral\ntransformations relate the several spectra obtained and find that for massless\nparticles the spin and pseudospin symmetry related problems have the same\nspectrum, but different spinor solutions. Finally, we establish a relation of\nthe solutions found with single-particle states of nuclei described by\nrelativistic mean-field theories with scalar, vector and isoscalar tensor\ninteractions and discuss the conditions in which one may have both nucleon and\nantinucleon bound states.",
"arxiv_id": "nucl-th/0604068",
"authors": [
"A. S. de Castro",
"P. Alberto",
"R. Lisboa",
"M. Malheiro"
],
"categories": [
"nucl-th",
"hep-th",
"quant-ph"
],
"doi": "10.1103/PhysRevC.73.054309",
"journal_ref": "Phys.Rev. C73 (2006) 054309",
"title": "Relating pseudospin and spin symmetries through charge conjugation and chiral transformations: the case of the relativistic harmonic oscillator",
"url": "https://arxiv.org/abs/nucl-th/0604068"
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