| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16d.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 8JMKD3MGP7W/36HLAEL |
| Repository | sid.inpe.br/mtc-m19@80/2009/12.09.18.30 (restricted access) |
| Last Update | 2009:12.09.18.30.29 (UTC) administrator |
| Metadata Repository | sid.inpe.br/mtc-m19@80/2009/12.09.18.30.31 |
| Metadata Last Update | 2018:06.05.04.36.00 (UTC) administrator |
| Secondary Key | INPE--PRE/ |
| DOI | 10.1088/1475-7516/2009/09/031 |
| ISSN | 1475-7516 |
| Citation Key | BessadaKinnTzir:2009:InPoDB |
| Title | Inflationary potentials in DBI models  |
| Year | 2009 |
| Access Date | 2024, Apr. 27 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 445 KiB |
| 2. Context | |
| Author | 1 Bessada, Dennis 2 Kinney, William H. 3 Tzirakis, Konstantinos |
| Group | 1 DAS-CEA-INPE-MCT-BR |
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 University at Buffalo 3 University at Buffalo |
| Journal | Journal of Cosmology and Astroparticle Physics |
| Volume | 31 |
| History (UTC) | 2010-03-15 11:48:58 :: simone -> administrator :: 2018-06-05 04:36:00 :: administrator -> marciana :: 2009 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | inflation alternatives to inflation |
| Abstract | We study DBI inflation based upon a general model characterized by a power-law flow parameter () á and speed of sound cs() â, where á and â are constants. We show that in the slow-roll limit this general model gives rise to distinct inflationary classes according to the relation between á and â and to the time evolution of the inflaton field, each one corresponding to a specific potential; in particular, we find that the well-known canonical polynomial (large- and small-field), hybrid and exponential potentials also arise in this non-canonical model. We find that these non-canonical classes have the same physical features as their canonical analogs, except for the fact that the inflaton field evolves with varying speed of sound; also, we show that a broad class of canonical and D-brane inflation models are particular cases of this general non-canonical model. Next, we compare the predictions of large-field polynomial models with the current observational data, showing that models with low speed of sound have red-tilted scalar spectrum with low tensor-to-scalar ratio, in good agreement with the observed values. These models also show a correlation between large non-gaussianity with low tensor amplitudes, which is a distinct signature of DBI inflation with large-field polynomial potentials. |
| Area | CEA |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAS > Inflationary potentials in... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | inflationary.pdf |
| User Group | administrator simone |
| Visibility | shown |
| Archiving Policy | denypublisher denyfinaldraft12 |
| Read Permission | deny from all and allow from 150.163 |
| 5. Allied materials | |
| Mirror Repository | sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53 |
| Next Higher Units | 8JMKD3MGPCW/3ETR8EH |
| Dissemination | WEBSCI; PORTALCAPES. |
| Host Collection | sid.inpe.br/mtc-m19@80/2009/08.21.17.02 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel documentstage e-mailaddress electronicmailaddress format isbn label lineage mark month nextedition notes number orcid pages parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |