000099684 001__ 99684 000099684 005__ 20230519145404.0 000099684 0247_ $$2doi$$a10.1103/PhysRevD.103.045005 000099684 0248_ $$2sideral$$a123185 000099684 037__ $$aART-2021-123185 000099684 041__ $$aeng 000099684 100__ $$0(orcid)0000-0002-5575-6775$$aCavero-Peláez, I.$$uUniversidad de Zaragoza 000099684 245__ $$aCasimir energy for concentric d-d' Spheres 000099684 260__ $$c2021 000099684 5060_ $$aAccess copy available to the general public$$fUnrestricted 000099684 5203_ $$aWe study the vacuum interaction of a scalar field and two concentric spheres defined by a singular potential on their surfaces. The potential is a linear combination of the Dirac d and its derivative. The presence of the delta prime term in the potential causes that it behaves differently when it is seen from the inside or from the outside of the sphere. We study different cases for positive and negative values of the delta prime coupling, keeping positive the coupling of the delta. As a consequence, we find regions in the space of couplings, where the energy is positive, negative or zero. Moreover, the sign of the d' couplings cause different behavior on the value of the Casimir energy for different values of the radii. This potential gives rise to general boundary conditions with limiting cases defining Dirichlet and Robin boundary conditions what allows us to simulate purely electric or purely magnetic spheres. 000099684 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FSE/E21-17R 000099684 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000099684 590__ $$a5.407$$b2021 000099684 592__ $$a1.677$$b2021 000099684 594__ $$a9.5$$b2021 000099684 591__ $$aPHYSICS, PARTICLES & FIELDS$$b7 / 29 = 0.241$$c2021$$dQ1$$eT1 000099684 593__ $$aPhysics and Astronomy (miscellaneous)$$c2021$$dQ1 000099684 591__ $$aASTRONOMY & ASTROPHYSICS$$b16 / 69 = 0.232$$c2021$$dQ1$$eT1 000099684 593__ $$aNuclear and High Energy Physics$$c2021$$dQ1 000099684 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000099684 700__ $$aMunoz-Castaneda, J.M. 000099684 700__ $$aRomaniega, C. 000099684 7102_ $$12004$$2405$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Teórica 000099684 773__ $$g103, 4 (2021), 045005 [9 pp]$$pPhys. rev. D$$tPhysical Review D$$x2470-0010 000099684 8564_ $$s397262$$uhttps://zaguan.unizar.es/record/99684/files/texto_completo.pdf$$yVersión publicada 000099684 8564_ $$s2890406$$uhttps://zaguan.unizar.es/record/99684/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000099684 909CO $$ooai:zaguan.unizar.es:99684$$particulos$$pdriver 000099684 951__ $$a2023-05-18-13:43:58 000099684 980__ $$aARTICLE