Spectroscopy of the Dirac oscillator perturbed by a surface delta potential

We study theoretically the level shift of the Dirac oscillator perturbed by any sharply peaked potential approaching a surface delta potential. A Green function method is used to obtain closed expressions for all partial waves and parities. --- Source: arXiv:2602.20030v1 - http://arxiv.org/abs/2602.20030v1 PDF: https://arxiv.org/pdf/2602.20030v1 Original Link: http://arxiv.org/abs/2602.20030v1