Navegar

Colección

Datos Estadísticas

Conferencia

El editor permite incluir el artículo en su versión final en nuestro repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

We examine a spatially flat Friedmann-Robertson-Walker (FRW) universe filled with interacting dark matter and a modified holographic Ricci dark energy (MHRDE). The interaction term is selected as a significant rational function of the total energy density and its first derivative homogeneous of degree. We show that the effective one-fluid obeys the equation of state of a relaxed Chaplygin gas, then the universe turns to be dominated by pressureless dark matter at early times and undergoes an accelerated expansion in the far future driven by a strong negative pressure. Performing a X2-statistical analysis with the observational Hubble data and the Union2 compilation of SNe Ia, we place some constraints on cosmological parameters analyzing the feasibleness of the modified holographic Ricci ansatz. It turned that MHRDE gets the accelerated expansion faster than the ΛCDM model. Finally, a new model with a component that does not exchange energy with the interacting dark sector is presented for studying bounds on the dark energy at early times. © 2012 American Institute of Physics.

Registro:

Documento: Conferencia
Título:Dark matter and Ricci-like holographic dark energy coupled through a quadratic interaction
Autor:Chimento, L.P.; Richarte, M.G.
Ciudad:Rio de Janeiro
Filiación:Departamento de Física, Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Palabras clave:dark energy; dark matter; early dark energy; interaction; relaxed Chaplygin gas; Ricci cutoff
Año:2012
Volumen:1471
Página de inicio:45
Página de fin:50
DOI: http://dx.doi.org/10.1063/1.4756810
Título revista:I CosmoSul: Cosmology and Gravitation in the Southern Cone
Título revista abreviado:AIP Conf. Proc.
ISSN:0094243X
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_0094243X_v1471_n_p45_Chimento.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v1471_n_p45_Chimento

Referencias:

  • Riess, A.G., (1998) Astronomical Journal, 116, p. 100938. , Supernova Search Team
  • Perlmutter, S., (1998) Nature, 391, p. 51
  • Spergel, D.N., (2003) Astrophys. J. Suppl., 148, p. 175
  • E. Komatsu et al. [WMAP Collaboration], [arXiv:0803.0547]; Clowe, D., (2006) ApJ Letters, 648, pp. L109
  • Bradac, M., (2008) ApJ, 687, p. 959
  • R. W. Schnee, [arXiv:1101.5205]; Chimento, L.P., (2010) Phys.Rev.D, 81, p. 043525
  • G. 't Hooft, [arXiv:gr-qc/9310026]; W. Fischler, L. Susskind, [arXiv:hep-th/9806039]; Cohen, A., Kaplan, D., Nelson, A., (1999) Phys. Rev. Lett., 82, p. 4971
  • Hsu, S.D.H., (2004) Phys. Lett. B, 594, p. 13
  • Li, M., (2004) Phys. Lett. B, 603, p. 1
  • Nojiri, S., Odintsov, S.D., (2006) Gen.Rel.Grav., 38, pp. 1285-1304
  • S.del Campo, J.C. Fabris, R. Herrera, W. Zimdahl, arXiv:1103.3441v2; L. N. Granda, W. Cardona, A. Oliveros, [arXiv:0910.0778]; Zhang, L., Wu, P., Yu, H., (2011) Eur. Phys. J. C, 71, p. 1588
  • Aviles, A., Bonanno, L., Luongo, O., Quevedo, H., (2011) Phys.Rev.D, 84, p. 103520
  • Durán, I., Pavón, D., (2011) Phys.Rev.D, 83, p. 023504
  • Granda, L.N., Oliveros, A., (2009) Phys.Lett.B, 671, pp. 199-202
  • L. P. Chimento, M. Forte and M. G. Richarte, [arXiv:1106.0781]; Chimento, L.P., Richarte, M.G., (2011) Phys.Rev. D, 84, p. 123507
  • Simon, J., Verde, L., Jimenez, R., (2005) Phys. Rev. D, 71, p. 123001. , astro-ph/0412269
  • D. Stern et al., [arXiv:0907.3149]; Press, W.H., (1997) Numerical Recipes, , C. Cambridge University Press, Cambridge
  • Riess, A.G., (2009) Astrophys. J., 699, p. 539. , arXiv:0905.0695
  • E. Komatsu, et al., arXiv:1001.4538 [astro-ph.CO]; Amanullah, R., (2010) Astrophys. J., 716, p. 712. , arXiv:1004.1711
  • Calabrese, E., Huterer, D., Linder, E.V., Melchiorri, A., Pagano, L., (2011) Phys.Rev.D, 83, p. 123504
  • Calabrese, E., De Putter, R., Huterer, D., Linder, E.V., Melchiorri, A., (2011) Phys.Rev.D, 83, p. 023011A4 - Ministry of Science, Technology and Innovation (MCTI); INEspaco; National Observatory; CNPq; CAPES

Citas:

---------- APA ----------
Chimento, L.P. & Richarte, M.G. (2012) . Dark matter and Ricci-like holographic dark energy coupled through a quadratic interaction. I CosmoSul: Cosmology and Gravitation in the Southern Cone, 1471, 45-50.
http://dx.doi.org/10.1063/1.4756810
---------- CHICAGO ----------
Chimento, L.P., Richarte, M.G. "Dark matter and Ricci-like holographic dark energy coupled through a quadratic interaction" . I CosmoSul: Cosmology and Gravitation in the Southern Cone 1471 (2012) : 45-50.
http://dx.doi.org/10.1063/1.4756810
---------- MLA ----------
Chimento, L.P., Richarte, M.G. "Dark matter and Ricci-like holographic dark energy coupled through a quadratic interaction" . I CosmoSul: Cosmology and Gravitation in the Southern Cone, vol. 1471, 2012, pp. 45-50.
http://dx.doi.org/10.1063/1.4756810
---------- VANCOUVER ----------
Chimento, L.P., Richarte, M.G. Dark matter and Ricci-like holographic dark energy coupled through a quadratic interaction. AIP Conf. Proc. 2012;1471:45-50.
http://dx.doi.org/10.1063/1.4756810