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Nonsingular models of universes in teleparallel theories
dc.contributor.author | Haro Cases, Jaume |
dc.contributor.author | Amorós Torrent, Jaume |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada I |
dc.date.accessioned | 2013-04-09T11:50:58Z |
dc.date.available | 2013-04-09T11:50:58Z |
dc.date.created | 2013-02-14 |
dc.date.issued | 2013-02-14 |
dc.identifier.citation | Haro, J.; Amoros, J. Nonsingular models of universes in teleparallel theories. "Physical review letters", 14 Febrer 2013, vol. 110, núm. 7, p. 1-5. |
dc.identifier.issn | 0031-9007 |
dc.identifier.uri | http://hdl.handle.net/2117/18733 |
dc.description | PACS Numbers: 04.50.Kd, 98.80.Jk |
dc.description.abstract | Different models of universes are considered in the context of teleparallel theories. Assuming that the universe is filled by a fluid with an equation of state P ¼ f ð Þ , for different teleparallel theories and different equation of state we study its dynamics. Two particular cases are studied in detail: in the first one we consider a function f with two zeros (two de Sitter solutions) that mimics a huge cosmological constant at early times and a pressureless fluid at late times; in the second one, in the context of loop quantum cosmology with a small cosmological constant, we consider a pressureless fluid ( P ¼ 0 , f ð Þ¼ ) which means there are de Sitter and anti–de Sitter solutions. In both cases one obtains a nonsingular universe that at early times is in an inflationary phase; after leaving this phase, it passes trough a matter dominated phase and finally at late times it expands in an accelerated way |
dc.format.extent | 5 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Matemàtiques i estadística |
dc.subject.lcsh | Cosmology |
dc.subject.other | Cosmological constants |
dc.subject.other | Equation of state |
dc.subject.other | Loop quantum cosmologies |
dc.subject.other | Nonsingular |
dc.subject.other | Pressureless |
dc.subject.other | Teleparallel theory |
dc.title | Nonsingular models of universes in teleparallel theories |
dc.type | Article |
dc.subject.lemac | Cosmologia |
dc.contributor.group | Universitat Politècnica de Catalunya. EGSA - Equacions Diferencials, Geometria, Sistemes Dinàmics i de Control, i Aplicacions |
dc.identifier.doi | 10.1103/PhysRevLett.110.071104 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://www.scopus.com/record/display.url?eid=2-s2.0-84874046397&origin=inward&txGid=C0C858D56FF43EE6B42B4DAF9E9A862E.iqs8TDG0Wy6BURhzD3nFA%3a3 |
dc.rights.access | Open Access |
local.identifier.drac | 11807057 |
dc.description.version | Postprint (published version) |
local.citation.author | Haro, J.; Amoros, J. |
local.citation.publicationName | Physical review letters |
local.citation.volume | 110 |
local.citation.number | 7 |
local.citation.startingPage | 1 |
local.citation.endingPage | 5 |
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