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HAMILTONIAN FORMULATION OF AN EFFECTIVE MODIFIED GRAVITY WITH NONDYNAMICAL BACKGROUND FIELDS

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dc.creatorCARLOS MARAT REYES MARTÍNEZ
dc.date2021
dc.date.accessioned2025-01-10T15:25:04Z
dc.date.available2025-01-10T15:25:04Z
dc.date.issued2021
dc.description.abstractTHE CURRENT PAPER IS DEDICATED TO DEVELOPING A (3+1) DECOMPOSITION FOR THE MINIMAL GRAVITATIONAL STANDARD-MODEL EXTENSION. OUR SETTING IS EXPLICIT DIFFEOMORPHISM VIOLATION AND WE FOCUS ON THE BACKGROUND FIELDS KNOWN IN THE LITERATURE AS U AND S??. THE HAMILTONIAN FORMALISM IS DEVELOPED FOR THESE CONTRIBUTIONS, WHICH AMOUNTS TO DERIVING MODIFIED HAMILTONIAN AND MOMENTUM CONSTRAINTS. WE THEN STUDY THE CONNECTION BETWEEN THESE MODIFIED CONSTRAINTS AND THE MODIFIED EINSTEIN EQUATIONS. IMPLICATIONS ARE DRAWN ON THE FORM OF THE BACKGROUND FIELDS TO GUARANTEE THE INTERNAL CONSISTENCY OF THE CORRESPONDING MODIFIED-GRAVITY THEORIES. IN THE COURSE OF OUR ANALYSIS, WE OBTAIN A SET OF CONSISTENCY REQUIREMENTS FOR U AND CERTAIN SECTORS OF S??. WE ARGUE THAT THE CONSTRAINT STRUCTURE REMAINS UNTOUCHED WHEN THESE CONDITIONS ARE SATISFIED. OUR RESULTS SHED LIGHT ON EXPLICIT VIOLATIONS OF DIFFEOMORPHISM INVARIANCE AND LOCAL LORENTZ INVARIANCE IN GRAVITY. THEY MAY TURN OUT TO BE VALUABLE FOR DEVELOPING A BETTER UNDERSTANDING OF EFFECTIVE MODIFIED-GRAVITY THEORIES.
dc.formatapplication/pdf
dc.identifier.doi10.1103/PhysRevD.104.124042
dc.identifier.issn2470-0029
dc.identifier.issn2470-0010
dc.identifier.issn1550-2368
dc.identifier.issn1550-7998
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/11918
dc.languagespa
dc.publisherPHYSICAL REVIEW D
dc.relation.uri10.1103/PhysRevD.104.124042
dc.rightsPUBLICADA
dc.titleHAMILTONIAN FORMULATION OF AN EFFECTIVE MODIFIED GRAVITY WITH NONDYNAMICAL BACKGROUND FIELDS
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE CIENCIAS BASICAS
ubb.SedeCHILLÁN
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