English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/163049
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Uniqueness of the Fock quantization of Dirac fields in 2+1 dimensions

AutorCortez, Jerónimo; Elizaga Navascués, Beatriz ; Martín-Benito, Mercedes ; Mena Marugán, Guillermo A. ; Velhinho, José M.
Fecha de publicación28-jul-2017
EditorAmerican Physical Society
CitaciónPhysical Review D 96: 025024 (2017)
ResumenWe study the Fock quantization of a free Dirac field in 2+1-dimensional backgrounds which are conformally ultrastatic, with a time-dependent conformal factor. As it is typical for field theories, there is an infinite ambiguity in the Fock representation of the canonical anticommutation relations. Different choices may lead to unitarily inequivalent theories that describe different physics. To remove this ambiguity one usually requires that the vacuum be invariant under the unitary transformations that implement the symmetries of the equations of motion. However, in nonstationary backgrounds, where time translation is not a symmetry transformation, the requirement of vacuum invariance is in general not enough to fix completely the Fock representation. We show that this problem is overcome in the considered scenario by demanding, in addition, a unitarily implementable nontrivial quantum dynamics. The combined imposition of these conditions selects a unique family of equivalent Fock representations. Moreover, one also obtains an essentially unique splitting of the time variation of the Dirac field into an explicit dependence on the background scale factor and a quantum evolution of the corresponding creation and annihilation operators.
Descripción15 pags., 2 apps.
Versión del editorhttps://doi.org/10.1103/PhysRevD.96.025024
URIhttp://hdl.handle.net/10261/163049
Identificadoresdoi: 10.1103/PhysRevD.96.025024
issn: 2470-0029
Aparece en las colecciones: (CFMAC-IEM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Uniqueness of the Fock.pdf231,93 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.