2026-04-30T05:19:42Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/336212021-06-24T07:21:50Zcom_10324_22154com_10324_954com_10324_894col_10324_22155

Hyperspherical δ-δ’ potentials Muñoz Castañeda, José María Nieto Calzada, Luis Miguel Romaniega Sancho, César Producción Científica The spherically symmetric potential a δ(r − r0) + b δ′(r − r0) is generalised for the d-dimensional space as a characterisation of a unique selfadjoint extension of the free Hamiltonian. For this extension of the Dirac delta, the spectrum of negative, zero and positive energy states is studied in d ≥ 2, providing numerical results for the expectation value of the radius as a function of the free parameters of the potential. Remarkably, only if d = 2 the δ-δ′ potential for arbitrary a > 0 admits a bound state with zero angular momentum. 2018-12-21T11:58:46Z 2018-12-21T11:58:46Z 2019 info:eu-repo/semantics/article Ann. Phys. 400 (2019) 246–261 http://uvadoc.uva.es/handle/10324/33621 246 261 400 eng info:eu-repo/semantics/openAccess SI