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Abstract:

A cosmological model describing the different stages of the universe, i.e.: inflation, radiation dominated period and matter dominated (Friedmann-like) period is shown. The model consists of the usual gravitational lagrangian with a σ R2 term, and, for the matter content, the lagrangian of a massive conformally coupled scalar field. The effect of backreaction is evaluated by means of an extremum condition on the entropy at each time. The differential equation, obtained when the lowest quantum order is considered, describes all the periods of evolution of the universe. For a range of values of σ, inflation is unstable and the universe can reach the following regime. © 1995 Kluwer Academic Publishers.

Registro:

Documento: Artículo
Título:From inflation to Friedmann regime in R2 cosmology
Autor:Laciana, C.E.
Filiación:Instituto de Astronomía y Física del Espacio, Buenos Aires, Argentina
Año:1995
Volumen:229
Número:2
Página de inicio:173
Página de fin:184
DOI: http://dx.doi.org/10.1007/BF00626865
Título revista:Astrophysics and Space Science
Título revista abreviado:Astrophys Space Sci
ISSN:0004640X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v229_n2_p173_Laciana

Referencias:

  • Starobinsky, A.A., (1980) Phys. Lett., 91 B, p. 99
  • A.H. Guth, 1992: Inflation, in: D.N. Schramm (Ed.), Proceedings of the National Academy of Sciences “Colloquim an Physical Cosmology” Irvine, CA, March 27–28; Olive, K.A., (1990) Phys. Rep., 190 (6), pp. 307-403
  • Laciana, C.E., (1993) Gen. Rel. Grav., 25 (3), pp. 245-257
  • Birrell, N.D., Davies, P.C.W., (1982) Quantum Fields in Curved Space, , Cambridge Univ. Press, Cambridge
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  • Anderson, P., (1985) Phys. Rev. D, 32 (6), pp. 1302-1315
  • Castagnino, M., Laciana, C., (1988) J. Math. Phys., 29 (1988), p. 460
  • Castagnino, M., Laciana, C., Semiclassical Vacuum Definition for Scalar and Vector Fields. I: Three Introductory Attempts to Solve the Problem (1990) Progress of Theoretical Physics, 84 (4), pp. 595-615
  • Fulling, S.A., (1979) Gen. Rel. Grav., 10, p. 807
  • Laciana, C.E., (1993) Nuovo Cimento, 108 B, pp. 793-799
  • Mijić, M.B., Morris, M.S., Suen, W., (1986) Phys. Rev. D, 34, pp. 2934-2946
  • Suen, W., Anderson, P.R., (1987) Phys. Rev. D, 35 (10), pp. 2940-2954
  • Takahashi, Y., Umezawa, H., (1975) Collective Phenomena, 2, pp. 55-80
  • C.E. Laciana, 1994: Quantum Field Theory in Curved Space-Time as Thermo Field Dynamics, Gen. Rel. Grav.26, No. 4; L.D. Landau and E.M. Lifshitz, 1969: Statistical Physics, Vol. 5, Pergamon Press; Castagnino, M., Ferraro, R., (1986) Phys. Rev. D, 34, pp. 497-503
  • Anderson, P.R., Parker, L., (1987) Phys. Rev. D, 36, pp. 2963-2969
  • Linde, A., (1990) Particle Physics and Inflationary Cosmology, p. 91. , Harwood Academic Publishers, NY

Citas:

---------- APA ----------
(1995) . From inflation to Friedmann regime in R2 cosmology. Astrophysics and Space Science, 229(2), 173-184.
http://dx.doi.org/10.1007/BF00626865
---------- CHICAGO ----------
Laciana, C.E. "From inflation to Friedmann regime in R2 cosmology" . Astrophysics and Space Science 229, no. 2 (1995) : 173-184.
http://dx.doi.org/10.1007/BF00626865
---------- MLA ----------
Laciana, C.E. "From inflation to Friedmann regime in R2 cosmology" . Astrophysics and Space Science, vol. 229, no. 2, 1995, pp. 173-184.
http://dx.doi.org/10.1007/BF00626865
---------- VANCOUVER ----------
Laciana, C.E. From inflation to Friedmann regime in R2 cosmology. Astrophys Space Sci. 1995;229(2):173-184.
http://dx.doi.org/10.1007/BF00626865