Energy preserving boundary conditions in field theory

Asorey, Manuel (Universidad de Zaragoza) ; Ezquerro, Fernando (Universidad de Zaragoza)

Resumen: 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.

Idioma: Inglés

DOI: 10.1103/PhysRevD.108.045008

Año: 2023

Publicado en: Physical Review D 108, 4 (2023), 045008 [10]
ISSN: 2470-0010

Factor impacto JCR: 4.6 (2023)

Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 6 / 30 = 0.2 (2023) - Q1 - T1
Categ. JCR: ASTRONOMY & ASTROPHYSICS rank: 17 / 84 = 0.202 (2023) - Q1 - T1

Factor impacto CITESCORE: 9.3 - Nuclear and High Energy Physics (Q1)

Factor impacto SCIMAGO: 1.587 - Physics and Astronomy (miscellaneous) (Q1) - Nuclear and High Energy Physics (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA-FSE/E21-17R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PGC2022-126078NB-C21

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Teórica (Dpto. Física Teórica)