Evidence for a disaggregation of the universe.

Alfonso-Faus, Antonio (2012). Evidence for a disaggregation of the universe.. "Astrophys Space Science", v. 337 (n. 1); pp. 367-372. ISSN 0004-640X. https://doi.org/10.1007/s10509-011-0806-7.

Descripción

Título: Evidence for a disaggregation of the universe.
Autor/es:
  • Alfonso-Faus, Antonio
Tipo de Documento: Artículo
Título de Revista/Publicación: Astrophys Space Science
Fecha: Agosto 2012
Volumen: 337
Materias:
Escuela: E.U.I.T. Aeronáutica (UPM) [antigua denominación]
Departamento: Aerotecnia [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Combining the kinematical definitions of the two dimensionless parameters, the deceleration q(x) and the Hubble t 0 H(x), we get a differential equation (where x=t/t 0 is the age of the universe relative to its present value t 0). First integration gives the function H(x). The present values of the Hubble parameter H(1) [approximately t 0 H(1)≈1], and the deceleration parameter [approximately q(1)≈−0.5], determine the function H(x). A second integration gives the cosmological scale factor a(x). Differentiation of a(x) gives the speed of expansion of the universe. The evolution of the universe that results from our approach is: an initial extremely fast exponential expansion (inflation), followed by an almost linear expansion (first decelerated, and later accelerated). For the future, at approximately t≈3t 0 there is a final exponential expansion, a second inflation that produces a disaggregation of the universe to infinity. We find the necessary and sufficient conditions for this disaggregation to occur. The precise value of the final age is given only with one parameter: the present value of the deceleration parameter [q(1)≈−0.5]. This emerging picture of the history of the universe represents an important challenge, an opportunity for the immediate research on the Universe. These conclusions have been elaborated without the use of any particular cosmological model of the universe

Más información

ID de Registro: 15383
Identificador DC: http://oa.upm.es/15383/
Identificador OAI: oai:oa.upm.es:15383
Identificador DOI: 10.1007/s10509-011-0806-7
URL Oficial: http://link.springer.com/article/10.1007/s10509-011-0806-7
Depositado por: Memoria Investigacion
Depositado el: 29 Ago 2013 10:51
Ultima Modificación: 21 Abr 2016 15:26
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