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dc.contributor | Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada I |
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dc.contributor | Universitat Politècnica de Catalunya. EGSA - Equacions Diferencials, Geometria, Sistemes Dinàmics i de Control, i Aplicacions |
dc.contributor.author | Haro Cases, Jaume |
dc.contributor.author | Amorós Torrent, Jaume |
dc.date | 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.citation | 0031-9007 |
dc.identifier.citation | 10.1103/PhysRevLett.110.071104 |
dc.identifier.uri | http://hdl.handle.net/2117/18733 |
dc.description.abstract | 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.description.abstract | Peer Reviewed |
dc.language.iso | eng |
dc.relation | http://www.scopus.com/record/display.url?eid=2-s2.0-84874046397&origin=inward&txGid=C0C858D56FF43EE6B42B4DAF9E9A862E.iqs8TDG0Wy6BURhzD3nFA%3a3 |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights | info:eu-repo/semantics/openAccess |
dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Matemàtiques i estadística |
dc.subject | Cosmology |
dc.subject | Cosmological constants |
dc.subject | Equation of state |
dc.subject | Loop quantum cosmologies |
dc.subject | Nonsingular |
dc.subject | Pressureless |
dc.subject | Teleparallel theory |
dc.subject | Cosmologia |
dc.title | Nonsingular models of universes in teleparallel theories |
dc.type | info:eu-repo/semantics/publishedVersion |
dc.type | info:eu-repo/semantics/article |