000074861 001__ 74861 000074861 005__ 20200117211559.0 000074861 0247_ $$2doi$$a10.1103/PhysRevD.97.125009 000074861 0248_ $$2sideral$$a107164 000074861 037__ $$aART-2018-107164 000074861 041__ $$aeng 000074861 100__ $$aParashar, P. 000074861 245__ $$aQuantum electromagnetic stress tensor in an inhomogeneous medium 000074861 260__ $$c2018 000074861 5060_ $$aAccess copy available to the general public$$fUnrestricted 000074861 5203_ $$aContinuing a program of examining the behavior of the vacuum expectation value of the stress tensor in a background which varies only in a single direction, we here study the electromagnetic stress tensor in a medium with permittivity depending on a single spatial coordinate, specifically, a planar dielectric half-space facing a vacuum region. There are divergences occurring that are regulated by temporal and spatial point splitting, which have a universal character for both transverse electric and transverse magnetic modes. The nature of the divergences depends on the model of dispersion adopted. And there are singularities occurring at the edge between the dielectric and vacuum regions, which also have a universal character, depending on the structure of the discontinuities in the material properties there. Remarks are offered concerning renormalization of such models, and the significance of the stress tensor. The ambiguity in separating "bulk" and "scattering" parts of the stress tensor is discussed. 000074861 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000074861 590__ $$a4.368$$b2018 000074861 591__ $$aASTRONOMY & ASTROPHYSICS$$b17 / 69 = 0.246$$c2018$$dQ1$$eT1 000074861 591__ $$aPHYSICS, PARTICLES & FIELDS$$b7 / 29 = 0.241$$c2018$$dQ1$$eT1 000074861 592__ $$a1.703$$b2018 000074861 593__ $$aPhysics and Astronomy (miscellaneous)$$c2018$$dQ1 000074861 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000074861 700__ $$aMilton, K.A. 000074861 700__ $$aLi, Y. 000074861 700__ $$aDay, H. 000074861 700__ $$aGuo, X. 000074861 700__ $$aFulling, S.A. 000074861 700__ $$0(orcid)0000-0002-5575-6775$$aCavero-Peláez, I.$$uUniversidad de Zaragoza 000074861 7102_ $$12004$$2405$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Teórica 000074861 773__ $$g97, 12 (2018), 125009 [19 pp]$$pPhys. rev. D$$tPHYSICAL REVIEW D$$x2470-0010 000074861 8564_ $$s489959$$uhttps://zaguan.unizar.es/record/74861/files/texto_completo.pdf$$yVersión publicada 000074861 8564_ $$s105487$$uhttps://zaguan.unizar.es/record/74861/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000074861 909CO $$ooai:zaguan.unizar.es:74861$$particulos$$pdriver 000074861 951__ $$a2020-01-17-21:11:01 000074861 980__ $$aARTICLE