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COSMOLOGY IN THE PRESENCE OF DIFFEOMORPHISM-VIOLATING, NONDYNAMICAL BACKGROUND FIELDS

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dc.creatorCARLOS MARAT REYES MARTÍNEZ
dc.date2022
dc.date.accessioned2025-01-10T15:32:19Z
dc.date.available2025-01-10T15:32:19Z
dc.date.issued2022
dc.description.abstractWE CONSIDER DIFFEOMORPHISM VIOLATION, WHICH IS PARAMETRIZED BY NONDYNAMICAL BACKGROUND FIELDS OF THE GRAVITATIONAL STANDARD-MODEL EXTENSION, AND STUDY ITS EFFECTS ON THE TIME EVOLUTION OF THE UNIVERSE. OUR GOAL IS TO IDENTIFY BACKGROUND FIELD CONFIGURATIONS THAT IMPLY STAGES OF ACCELERATED EXPANSION WITHOUT EXOTIC FORMS OF MATTER AND RADIATION PRESENT. ALTHOUGH OUR APPROACH GIVES RISE TO A SET OF RESTRICTIVE CONDITIONS, CONFIGURATIONS ARE ENCOUNTERED THAT EXHIBIT THIS PROPERTY OR SHOW OTHER INTERESTING BEHAVIORS. THE FINDINGS OF OUR ARTICLE, WHICH IS AMONG THE FIRST TO APPLY THE STANDARD-MODEL EXTENSION TO A COSMOLOGICAL SETTING, PROVIDE AN INITIAL UNDERSTANDING OF HOW TO TECHNICALLY INCORPORATE BACKGROUND FIELDS INTO THE COSMOLOGICAL EVOLUTION EQUATIONS AND WHAT THEIR PHENOMENOLOGICAL IMPACT MAY BE.
dc.formatapplication/pdf
dc.identifier.doi10.1103/PhysRevD.106.02352
dc.identifier.issn2470-0029
dc.identifier.issn2470-0010
dc.identifier.issn1550-2368
dc.identifier.issn1550-7998
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/12488
dc.languagespa
dc.publisherPHYSICAL REVIEW D
dc.relation.uri10.1103/PhysRevD.106.02352
dc.rightsPUBLICADA
dc.titleCOSMOLOGY IN THE PRESENCE OF DIFFEOMORPHISM-VIOLATING, NONDYNAMICAL BACKGROUND FIELDS
dc.title.alternativeCOSMOLOGÍA EN PRESENCIA DE CAMPOS DE FONDO NO DINÁMICOS QUE VIOLAN EL DIFEOMORFISMO
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE CIENCIAS BASICAS
ubb.SedeCHILLÁN
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