000128098 001__ 128098 000128098 005__ 20241125101201.0 000128098 0247_ $$2doi$$a10.1103/PhysRevD.108.045008 000128098 0248_ $$2sideral$$a135230 000128098 037__ $$aART-2023-135230 000128098 041__ $$aeng 000128098 100__ $$0(orcid)0000-0003-3669-6241$$aAsorey, Manuel$$uUniversidad de Zaragoza 000128098 245__ $$aEnergy preserving boundary conditions in field theory 000128098 260__ $$c2023 000128098 5060_ $$aAccess copy available to the general public$$fUnrestricted 000128098 5203_ $$aThe dynamics of classical field theories is usually governed by field equations, but when fields are constrained to bounded domains it is also dependent on its boundary conditions. Usually boundary conditions are constrained by the requirement of preserving the maximal symmetry of the system. In the case of charged particles the symmetry is U(1), but there are many fields (e.g. electromagnetic fields) which are neutral and charge conservation does not constraint its boundary conditions. In this paper we explore the most general boundary conditions that preserve another symmetry that all relativistic field theories do preserve: space-time translations. In particular the families of boundary conditions of isolated systems which preserve energy for scalar, electromagnetic and Yang-Mills field theories. We point out the global properties of the space of all possible boundary conditions of confined systems in two special domains. We also explore the connection between energy preserving and charge preserving boundary conditions. 000128098 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FSE/E21-17R$$9info:eu-repo/grantAgreement/ES/MICINN/PGC2022-126078NB-C21 000128098 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000128098 590__ $$a4.6$$b2023 000128098 592__ $$a1.587$$b2023 000128098 591__ $$aPHYSICS, PARTICLES & FIELDS$$b7 / 31 = 0.226$$c2023$$dQ1$$eT1 000128098 593__ $$aPhysics and Astronomy (miscellaneous)$$c2023$$dQ1 000128098 591__ $$aASTRONOMY & ASTROPHYSICS$$b17 / 84 = 0.202$$c2023$$dQ1$$eT1 000128098 593__ $$aNuclear and High Energy Physics$$c2023$$dQ1 000128098 594__ $$a9.3$$b2023 000128098 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000128098 700__ $$aEzquerro, Fernando$$uUniversidad de Zaragoza 000128098 7102_ $$12004$$2405$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Teórica 000128098 773__ $$g108, 4 (2023), 045008 [10]$$pPhys. rev. D$$tPhysical Review D$$x2470-0010 000128098 8564_ $$s232593$$uhttps://zaguan.unizar.es/record/128098/files/texto_completo.pdf$$yVersión publicada 000128098 8564_ $$s2950461$$uhttps://zaguan.unizar.es/record/128098/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000128098 909CO $$ooai:zaguan.unizar.es:128098$$particulos$$pdriver 000128098 951__ $$a2024-11-22-12:11:39 000128098 980__ $$aARTICLE