000123907 001__ 123907 000123907 005__ 20240731103319.0 000123907 0247_ $$2doi$$a10.1103/PhysRevD.107.025002 000123907 0248_ $$2sideral$$a132361 000123907 037__ $$aART-2023-132361 000123907 041__ $$aeng 000123907 100__ $$aRomaniega, C. 000123907 245__ $$aCasimir self-energy of a d-d0 sphere 000123907 260__ $$c2023 000123907 5060_ $$aAccess copy available to the general public$$fUnrestricted 000123907 5203_ $$aWe extend previous work on the vacuum energy of a massless scalar field in the presence of singular potentials. We consider a single sphere defined by the so-called δ − δ ′ interaction. Contrary to the Dirac δ -potential, we find a nontrivial one-parameter family of potentials such that the regularization procedure gives an unambiguous result for the Casimir self-energy. The procedure employed is based on the zeta function regularization and the cancellation of the heat kernel coefficient a 2 . The results obtained are in agreement with particular cases, such as the Dirac δ or Robin and Dirichlet boundary conditions. 000123907 536__ $$9info:eu-repo/grantAgreement/ES/MCI-AEI-FEDER/PGC2018-095328-B-I00 000123907 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000123907 590__ $$a4.6$$b2023 000123907 592__ $$a1.587$$b2023 000123907 591__ $$aPHYSICS, PARTICLES & FIELDS$$b6 / 30 = 0.2$$c2023$$dQ1$$eT1 000123907 593__ $$aPhysics and Astronomy (miscellaneous)$$c2023$$dQ1 000123907 591__ $$aASTRONOMY & ASTROPHYSICS$$b17 / 84 = 0.202$$c2023$$dQ1$$eT1 000123907 593__ $$aNuclear and High Energy Physics$$c2023$$dQ1 000123907 594__ $$a9.3$$b2023 000123907 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000123907 700__ $$aMunoz-Castaneda, J.¿M. 000123907 700__ $$0(orcid)0000-0002-5575-6775$$aCavero-Peláez, I.$$uUniversidad de Zaragoza 000123907 7102_ $$12004$$2405$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Teórica 000123907 773__ $$g107, 2 (2023), 025002 [12pp.]$$pPhys. rev. D$$tPhysical Review D$$x2470-0010 000123907 8564_ $$s477654$$uhttps://zaguan.unizar.es/record/123907/files/texto_completo.pdf$$yVersión publicada 000123907 8564_ $$s2769540$$uhttps://zaguan.unizar.es/record/123907/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000123907 909CO $$ooai:zaguan.unizar.es:123907$$particulos$$pdriver 000123907 951__ $$a2024-07-31-09:42:06 000123907 980__ $$aARTICLE