Generation of inflationary perturbations in the continuous spontaneous localization model: the second order power spectrum
Cosmic inflation, which describes an accelerated expansion of the early Universe, yields the most successful predictions regarding temperature anisotropies in the cosmic microwave background (CMB). Nevertheless, the precise origin of the primordial perturbations and their quantum-to-classical transi...
| Autores principales: | , |
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| Formato: | Articulo Preprint |
| Lenguaje: | Inglés |
| Publicado: |
2020
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/125346 |
| Aporte de: |
| id |
I19-R120-10915-125346 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas Física Semiclassical gravity Physics Statistical physics Spectral density Inflation (cosmology) Cosmic microwave background Slow roll Universe |
| spellingShingle |
Ciencias Astronómicas Física Semiclassical gravity Physics Statistical physics Spectral density Inflation (cosmology) Cosmic microwave background Slow roll Universe León, Gabriel Piccirilli, María Pía Generation of inflationary perturbations in the continuous spontaneous localization model: the second order power spectrum |
| topic_facet |
Ciencias Astronómicas Física Semiclassical gravity Physics Statistical physics Spectral density Inflation (cosmology) Cosmic microwave background Slow roll Universe |
| description |
Cosmic inflation, which describes an accelerated expansion of the early Universe, yields the most successful predictions regarding temperature anisotropies in the cosmic microwave background (CMB). Nevertheless, the precise origin of the primordial perturbations and their quantum-to-classical transition is still an open issue. The continuous spontaneous localization model (CSL), in the cosmological context, might be used to provide a solution to the mentioned puzzles by considering an objective reduction of the inflaton wave function. In this work, we calculate the primordial power spectrum at the next leading order in the Hubble flow functions that results from applying the CSL model to slow roll inflation within the semiclassical gravity framework. We employ the method known as uniform approximation along with a second order expansion in the Hubble flow functions. We analyze some features in the CMB temperature and primordial power spectra that could help to distinguish between the standard prediction and our approach. |
| format |
Articulo Preprint |
| author |
León, Gabriel Piccirilli, María Pía |
| author_facet |
León, Gabriel Piccirilli, María Pía |
| author_sort |
León, Gabriel |
| title |
Generation of inflationary perturbations in the continuous spontaneous localization model: the second order power spectrum |
| title_short |
Generation of inflationary perturbations in the continuous spontaneous localization model: the second order power spectrum |
| title_full |
Generation of inflationary perturbations in the continuous spontaneous localization model: the second order power spectrum |
| title_fullStr |
Generation of inflationary perturbations in the continuous spontaneous localization model: the second order power spectrum |
| title_full_unstemmed |
Generation of inflationary perturbations in the continuous spontaneous localization model: the second order power spectrum |
| title_sort |
generation of inflationary perturbations in the continuous spontaneous localization model: the second order power spectrum |
| publishDate |
2020 |
| url |
http://sedici.unlp.edu.ar/handle/10915/125346 |
| work_keys_str_mv |
AT leongabriel generationofinflationaryperturbationsinthecontinuousspontaneouslocalizationmodelthesecondorderpowerspectrum AT piccirillimariapia generationofinflationaryperturbationsinthecontinuousspontaneouslocalizationmodelthesecondorderpowerspectrum |
| bdutipo_str |
Repositorios |
| _version_ |
1764820451538763776 |