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Abstract:

We investigate the behaviour of the solutions to the gravitational (1 + 1)-dimensional equations with a viscous fluid source in the case of a Robertson-Walker metric. In our model the bulk viscosity coefficient is related to the energy density as ξ = αρm and we also take into account the effects of a nonlinear viscosity β. We find exact solutions of the field equations for several physically interesting cases which include Friedmann cosmologies and the time reversal of Murphy's class of cosmological solutions. We find that the global effect of bulk viscosity is to decrease the expansion rate while the nonlinear viscosity does not qualitatively change the models. On the other hand, the bulk viscosity is able to remove the initial singularities which are present in the corresponding viscosity free models as in the four-dimensional case. © 1996 IOP Publishing Ltd.

Registro:

Documento: Artículo
Título:Viscosity effects in (1 + 1)-dimensional cosmologies
Autor:Chimento, L.P.; Cossarini, A.E.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Pabellón I, 1428 Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas
Año:1996
Volumen:13
Número:7
Página de inicio:1727
Página de fin:1737
DOI: http://dx.doi.org/10.1088/0264-9381/13/7/006
Título revista:Classical and Quantum Gravity
Título revista abreviado:Classical Quantum Gravity
ISSN:02649381
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02649381_v13_n7_p1727_Chimento

Referencias:

  • Teitelboim, C., (1983) Phys. Lett., 126 B, p. 41
  • Jackiw, R., (1985) Nucl. Phys. B, 252, p. 343
  • Chimento, L.P., Cossarini, A.E., (1992) Nucl. Phys. B, 373, p. 438
  • Gegenberg, J., Kelly, P.F., Mann, R.B., McArthur, R., Vincent, D.E., (1988) Mod. Phys. Lett., 3 A, p. 1791
  • Polchinski, J., (1989) Nucl. Phys. B, 324, p. 123
  • Mann, R.B., (1991) Fond. Phys. Lett., 4, p. 425
  • Mann, R.B., Morsink, S.M., Sikkema, A.E., Steele, T.G., (1991) Phys. Rev. D, 43, p. 3948
  • Mann, R.B., (1991) Phys. Rev. D, 43, p. 3948
  • Mann, R.B., Shiekh, A., Tarasov, L., (1990) Nucl. Phys. B, 341, p. 134
  • Mann, R.B., Ross, S.F., (1992) Class. Quantum Grav., 9, p. 2335
  • Sikkema, A., Mann, R.B., (1991) Class. Quantum Grav., 8, p. 219
  • Morsink, S.M., Mann, R.B., (1991) Class. Quantum Grav., 8, p. 2215
  • Mann, R.B., Steele, T.G., (1992) Class. Quantum Grav., 9, p. 475
  • Chimento, L.P., Cossarini, A.E., (1993) Class. Quantum Grav., 10, p. 2001
  • Chan, K.C.K., Mann, R.B., (1993) Class. Quantum Grav., 10, p. 913
  • Chimento, L.P., Cossarini, A.E., (1994) Class. Quantum Grav., 11, p. 1177
  • Gron, O., (1990) Astrophys. Space Sci., 173, p. 191
  • Murphy, G.L., (1973) Phys. Rev. D, 8, p. 4231
  • Misner, C.W., (1968) Astrophys. J., 151, p. 431
  • Caderni, N., Fabri, R., (1978) Nuovo Cimento B, 44, p. 228
  • Weinberg, S., (1971) Astrophys. J., 168, p. 175
  • Barrow, J.D., (1986) Phys. Lett., 180 B, p. 335
  • Zel'dovich, Y.B., (1970) JETP Lett., 12, p. 307
  • Hu, B.L., (1982) Phys. Lett., 90 A, p. 743
  • Barrow, J.D., (1988) Nucl. Phys. B, 310, p. 743
  • Barrow, J.D., String-driven inflation (1990) The Formation and Evolution of Cosmic Strings, pp. 449-464. , ed Gibbons, Hawking and Vachaspati (Cambridge: Cambridge University Press)
  • Belinskii, V.A., Khalatnikov, I.M., (1977) Sov. Phys.-JETP, 45, p. 1
  • Novello, M., Araujo, T.A., (1988) Phys. Rev. D, 22, p. 260
  • Romero, C., (1988) Rev. Bras. Fis., 18, p. 75
  • Weinberg, S., (1972) Gravitation and Cosmology, , New York: Wiley
  • Treciokas, R., Ellis, G.F.R., (1971) Commun. Math. Phys., 23, p. 1
  • Belinskii, V.A., Khalatnikov, I.M., (1975) Sov. Phys.-JETP, 42, p. 205
  • Davies, P.C.W., (1988) Ann. Inst. H Poincaré, 49, p. 297
  • Heller, M., Szydlowski, M., (1983) Astrophys. Space Sci., 90, p. 327
  • Chimento, L.P., (1989) Class. Quantum Grav., 6, p. 1285

Citas:

---------- APA ----------
Chimento, L.P. & Cossarini, A.E. (1996) . Viscosity effects in (1 + 1)-dimensional cosmologies. Classical and Quantum Gravity, 13(7), 1727-1737.
http://dx.doi.org/10.1088/0264-9381/13/7/006
---------- CHICAGO ----------
Chimento, L.P., Cossarini, A.E. "Viscosity effects in (1 + 1)-dimensional cosmologies" . Classical and Quantum Gravity 13, no. 7 (1996) : 1727-1737.
http://dx.doi.org/10.1088/0264-9381/13/7/006
---------- MLA ----------
Chimento, L.P., Cossarini, A.E. "Viscosity effects in (1 + 1)-dimensional cosmologies" . Classical and Quantum Gravity, vol. 13, no. 7, 1996, pp. 1727-1737.
http://dx.doi.org/10.1088/0264-9381/13/7/006
---------- VANCOUVER ----------
Chimento, L.P., Cossarini, A.E. Viscosity effects in (1 + 1)-dimensional cosmologies. Classical Quantum Gravity. 1996;13(7):1727-1737.
http://dx.doi.org/10.1088/0264-9381/13/7/006