Canonical quantization of the electromagnetic feld in Arbitrary ¿ -Gauge

Falceto, Fernando (Universidad de Zaragoza)

Resumen: We carry out the canonical quantization of the electromagnetic field in arbitrary ξ-gauge and compute its propagator. In this way we fill a gap in the literature and clarify some existing confusion about Feynman iϵ prescription for the propagator of the electromagnetic field. We also discuss the BRST quantization and investigate the apparent singularities present in the theory when the gauge parameter ξ takes the value −1. We find that this is a mere artifact due to the choice of basic modes and show that in the appropriate basis the commutation relations and the BRST transformation are, in fact, independent of the gauge parameter. The latter only appears as the coefficient of a BRST exact term in the Hamiltonian, which constitutes an extremely simple proof of the independence of any physical process on the gauge parameter ξ
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Idioma: Inglés

DOI: 10.1007/s00023-022-01259-w

Año: 2024

Publicado en: ANNALES HENRI POINCARE 25 (2024), 517-533 [17 pp.]
ISSN: 1424-0637

Factor impacto JCR: 1.5 (2022)

Categ. JCR: PHYSICS, MATHEMATICAL rank: 28 / 56 = 0.5 (2022) - Q2 - T2
Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 21 / 29 = 0.724 (2022) - Q3 - T3
Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 59 / 85 = 0.694 (2022) - Q3 - T3

Factor impacto CITESCORE: 2.5 - Mathematics (Q2) - Physics and Astronomy (Q3)

Factor impacto SCIMAGO: 1.007 - Mathematical Physics (Q1) - Statistical and Nonlinear Physics (Q1) - Nuclear and High Energy Physics (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA-FSE/E21-17R
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/PGC2018-095328-B-I00

Tipo y forma: Article (Published version)

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