128098 20241125101201.0 doi 10.1103/PhysRevD.108.045008 sideral 135230 ART-2023-135230 eng Asorey, Manuel Universidad de Zaragoza (orcid)0000-0003-3669-6241 Energy preserving boundary conditions in field theory 2023 Access copy available to the general public Unrestricted The 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. info:eu-repo/grantAgreement/ES/DGA-FSE/E21-17R info:eu-repo/grantAgreement/ES/MICINN/PGC2022-126078NB-C21 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 4.6 2023 PHYSICS, PARTICLES & FIELDS 7 / 31 = 0.226 2023 Q1 T1 ASTRONOMY & ASTROPHYSICS 17 / 84 = 0.202 2023 Q1 T1 1.587 2023 Physics and Astronomy (miscellaneous) 2023 Q1 Nuclear and High Energy Physics 2023 Q1 9.3 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Ezquerro, Fernando Universidad de Zaragoza 2004 405 Universidad de Zaragoza Dpto. Física Teórica Área Física Teórica 108, 4 (2023), 045008 [10] Phys. rev. D Physical Review D 2470-0010 232593 http://zaguan.unizar.es/record/128098/files/texto_completo.pdf Versión publicada 2950461 http://zaguan.unizar.es/record/128098/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:128098 articulos driver 2024-11-22-12:11:39 ARTICLE