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dc.contributor.author
Falomir, Horacio Alberto
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Gamboa, J.
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Méndez, F.
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Gondolo, P.
dc.date.available
2018-06-27T00:58:57Z
dc.date.issued
2017-10
dc.identifier.citation
Falomir, Horacio Alberto; Gamboa, J.; Méndez, F.; Gondolo, P.; Inflation without inflaton: A model for dark energy; American Physical Society; Physical Review D; 96; 8; 10-2017; 1-16
dc.identifier.issn
2470-0029
dc.identifier.uri
http://hdl.handle.net/11336/50234
dc.description.abstract
The interaction between two initially causally disconnected regions of the Universe is studied using analogies of noncommutative quantum mechanics and the deformation of Poisson manifolds. These causally disconnect regions are governed by two independent Friedmann-Lemaître-Robertson-Walker (FLRW) metrics with scale factors a and b and cosmological constants Λa and Λb, respectively. The causality is turned on by positing a nontrivial Poisson bracket [Pα,Pβ]=ϵαβκG, where G is Newton's gravitational constant and κ is a dimensionless parameter. The posited deformed Poisson bracket has an interpretation in terms of 3-cocycles, anomalies, and Poissonian manifolds. The modified FLRW equations acquire an energy-momentum tensor from which we explicitly obtain the equation of state parameter. The modified FLRW equations are solved numerically and the solutions are inflationary or oscillating depending on the values of κ. In this model, the accelerating and decelerating regime may be periodic. The analysis of the equation of state clearly shows the presence of dark energy. By completeness, the perturbative solution for κ 1 is also studied.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
No Conmutatividad
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Energía Oscura
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Inflation without inflaton: A model for dark energy
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-06-25T16:15:40Z
dc.identifier.eissn
2470-0010
dc.journal.volume
96
dc.journal.number
8
dc.journal.pagination
1-16
dc.journal.pais
Estados Unidos
dc.journal.ciudad
College Park
dc.description.fil
Fil: Falomir, Horacio Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
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Fil: Gamboa, J.. Universidad de Santiago de Chile; Chile
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Fil: Méndez, F.. Universidad de Santiago de Chile; Chile
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Fil: Gondolo, P.. University of Utah; Estados Unidos
dc.journal.title
Physical Review D
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1103/PhysRevD.96.083534
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info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.96.083534
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