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OPTICAL THEOREM AND INDEFINITE METRIC IN LAMBDA PHI(4) DELTA-THEORY

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dc.creatorCARLOS MARAT REYES MARTÍNEZ
dc.date2020
dc.date.accessioned2025-01-10T15:15:25Z
dc.date.available2025-01-10T15:15:25Z
dc.date.issued2020
dc.description.abstractA CLASS OF EFFECTIVE FIELD THEORY CALLED DELTA-THEORY, WHICH IMPROVES ULTRAVIOLET DIVERGENCES IN QUANTUM FIELD THEORY, IS CONSIDERED. WE FOCUS ON A SCALAR MODEL WITH A QUARTIC SELF-INTERACTION TERM AND CONSTRUCT THE DELTA THEORY BY APPLYING THE SO-CALLED DELTA PRESCRIPTION. WE QUANTIZE THE THEORY USING FIELD VARIABLES THAT DIAGONALIZE THE LAGRANGIAN, WHICH INCLUDE A STANDARD SCALAR FIELD AND A GHOST OR NEGATIVE NORM STATE. AS WELL KNOWN, THE INDEFINITE METRIC MAY LEAD TO THE LOSS OF UNITARY OF THE S-MATRIX. WE STUDY THE OPTICAL THEOREM AND CHECK THE VALIDITY OF THE CUTTING EQUATIONS FOR THREE PROCESSES AT ONE-LOOP ORDER, AND FOUND SUPPRESSED VIOLATIONS OF UNITARITY IN THE DELTA COUPLING PARAMETER OF THE ORDER OF ?4.
dc.formatapplication/pdf
dc.identifier.doi10.1142/S0217751X20502140
dc.identifier.issn1793-656X
dc.identifier.issn0217-751X
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/11154
dc.languagespa
dc.publisherINTERNATIONAL JOURNAL OF MODERN PHYSICS A
dc.relation.uri10.1142/S0217751X20502140
dc.rightsPUBLICADA
dc.titleOPTICAL THEOREM AND INDEFINITE METRIC IN LAMBDA PHI(4) DELTA-THEORY
dc.title.alternativeTEOREMA ÓPTICO Y MÉTRICA INDEFINIDA EN $??^4$ DELTA-TEORÍA
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE CIENCIAS BASICAS
ubb.SedeCHILLÁN
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