Quantum corrections to the Mukhanov-Sasaki equations

Simple item page
dc.contributor.authorCastelló Gomar, Laura
dc.contributor.authorMena Marugán, Guillermo A.
dc.contributor.authorMartín Benito, Mercedes
dc.date.accessioned2024-02-06T11:20:24Z
dc.date.available2024-02-06T11:20:24Z
dc.date.issued2016
dc.description.abstractRecently, a lot of attention has been paid to the modifications of the power spectrum of primordial fluctuations caused by quantum cosmology effects. The origin of these modifications is corrections to the Mukhanov-Sasaki equations that govern the propagation of the primeval cosmological perturbations. The specific form of these corrections depends on a series of details of the quantization approach and of the prescription followed to implement it. Generally, the complexity of the theoretical quantum formulation is simplified in practice appealing to a semiclassical or effective approximation in order to perform concrete numerical computations. In this work, we introduce technical tools and design a procedure to deal with these quantum corrections beyond the most direct approximations employed so far in the literature. In particular, by introducing an interaction picture, we extract the quantum dynamics of the homogeneous geometry in absence of scalar field potential and inhomogeneities, dynamics that has been intensively studied and that can be integrated. The rest of our analysis focuses on the interaction evolution, putting forward methods to cope with it. The ultimate aim is to develop treatments that increase our ability to discriminate between the predictions of different quantization proposals for cosmological perturbations.
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Economía y Competitividad (España)
dc.description.sponsorshipNetherlands Organisation for Scientific Research
dc.description.statuspub
dc.identifier.citationCastelló Gomar, Laura, et al. «Quantum Corrections to the Mukhanov-Sasaki Equations». Physical Review D, vol. 93, n.o 10, mayo de 2016, p. 104025. DOI.org (Crossref), https://doi.org/10.1103/PhysRevD.93.104025.
dc.identifier.doi10.1103/physrevd.93.104025
dc.identifier.essn2470-0029
dc.identifier.issn2470-0010
dc.identifier.officialurlhttps://doi.org/10.1103/PhysRevD.93.104025
dc.identifier.relatedurlhttp://hdl.handle.net/10261/152082
dc.identifier.relatedurlhttps://arxiv.org/abs/1603.08448
dc.identifier.urihttps://hdl.handle.net/20.500.14352/99383
dc.journal.titlePhysical Review D
dc.language.isoeng
dc.page.final104025-15
dc.page.initial104025-1
dc.publisherAmerican Physical Society
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO//FIS2014-54800-C2-2-P/ES/GRAVEDAD Y UNIVERSO CUANTICO: COSMOLOGIA DE LAZOS, AGUJEROS NEGROS Y FRACTALES/
dc.relation.projectID62001772
dc.rights.accessRightsopen access
dc.subject.cdu530.145
dc.subject.ucmTeoría de los quanta
dc.subject.unesco2212 Física Teórica
dc.titleQuantum corrections to the Mukhanov-Sasaki equations
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number93
dspace.entity.typePublication
relation.isAuthorOfPublicatione4763414-91cd-42f1-b41a-76fc60c6f215
relation.isAuthorOfPublication.latestForDiscoverye4763414-91cd-42f1-b41a-76fc60c6f215
Download
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Quantum_corrections.pdf
Size:
225.29 KB
Format:
Adobe Portable Document Format
downoload Download
Collections
Artículos