Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-27T09:31:05.422Z Has data issue: false hasContentIssue false
  • English
  • Français

Does cosmological structure formation require dark energy?

Published online by Cambridge University Press:  30 May 2009

E. Pécontal ,
T. Buchert ,
Ph. Di Stefano ,
Y. Copin  and
S. Sarkar
S. Sarkar*
Affiliation:
Rudolf Peierls Centre for Theoretical Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, UK
*
[email protected]
Get access

Abstract

Precision measurements of anisotropies in the cosmic microwave background and of the clustering of large-scale structure have supposedly established that the universe is presently dominated by “dark energy” which has negative pressure and behaves similarly to a cosmological constant. This is based on the assumption that the primordial density perturbation has a nearly scale-invariant power-law spectrum and that the dark matter consists of “cold” particles. However there are theoretical and observational indications that the spectrum is not scale-free and it is known that sub-eV mass neutrinos contribute a small component of hot dark matter. This would be sufficient to fit the same observational data without requiring any dark energy.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 36: Dark Energy and Dark Matter: Observations, Experiments and Theories , 2009 , pp. 3 - 9
Copyright
© EAS, EDP Sciences, 2009

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Adams, J.A., Ross, G.G., & Sarkar, S., 1997, Nucl. Phys., B, 503, 405
Alexander, S., Biswas, T., Notari, A., & Vaid, D. [arXiv:0712.0370] [astro-ph]
Allen, S.W., Schmidt, R.W., Ebeling, H., et al., 2004, Mon. Not. Roy. Astron. Soc., 353, 457 CrossRef
Blanchard, A., Douspis, M., Rowan-Robinson, M., & Sarkar, S., 2003, A&A, 412, 35
Caldwell, R.R., & Stebbins, A., 2008, Phys. Rev. Lett., 100, 191302 CrossRef
Celerier, M.N., 2007, New Adv. Phys., 1, 29
Efstathiou, G., & Bond, J.R., 1998, Mon. Not. Roy. Astron. Soc., 304, 75 CrossRef
Efstathiou, G., Sutherland, W.J., & Maddox, S.J., 1990, Nature D, 348, 705 CrossRef
Fields, B., & Sarkar, S., 2008, Phys. Lett. B, 667, 228
Freedman, W.L., et al. (Hubble Key Project Collab.), 2001, ApJ, 553, 47
Garcia-Bellido, J., & Haugboelle, T., 2008, JCAP, 0804, 003 CrossRef
Gawiser, E., & Silk, J., 1998, Science, 280, 1405 CrossRef
Giannantonio, T., et al., 2008, Phys. Rev. D, 77, 123520 CrossRef
Granett, B.R., Neyrinck, M.C., & Szapudi, I., 2008, ApJ, 683, L99 CrossRef
Hunt, P., & Sarkar, S., 2004, Phys. Rev. D, 70, 103518 CrossRef
Hunt, P., & Sarkar, S., 2007, Phys. Rev. D, 76, 123504 CrossRef
Hunt, P., & Sarkar, S. [arXiv:0807.4508 astro-ph]
Jungman, G., Kamionkowski, M., Kosowsky, A., & Spergel, D.N., 1996, Phys. Rev. D, 54, 1332 CrossRef
Kashlinsky, A., Atrio-Barandela, F., Kocevski, D., & Ebeling, H., 2008, ApJ, 686, L49 CrossRef
Kochanek, C.S., & Schechter, P.L., in “Measuring and Modeling the Universe”, ed. W. Freedman (CUP, 2004), 117
Mukhanov, V.F., & Chibisov, G.V., 1981, JETP Lett., 33, 532
Nolta, M.R., et al. (WMAP Collaboration), 2009, ApJS, 180, 296
Percival, W.J., et al. (2dFGRS Collab.), 2001, Mon. Not. Roy. Astron. Soc., 327, 1297
Perlmutter, S., et al. (Supernova Cosmology Project Collab.), 1999, ApJ, 517, 565
Riess, A.G., et al. (Supernova Search Team Collab.), 1998, AJ, 116, 1009
Sarkar, S., 2008, Gen. Rel. Grav., 40, 269 CrossRef
Scott, D., Silk, J., & White, M.J., 1995, Science, 268, 829 CrossRef
Smoot, G.F., et al., 1992, ApJ, 396, L1 CrossRef
Spergel, D.N., et al. (WMAP Collab.), 2003, ApJS, 148, 175
Straumann, N., 2007, Lect. Notes Phys., 721, 327 CrossRef
Tegmark, M., et al. (SDSS Collaboration), ApJ, 606, 702
White, S.D.M., Efstathiou, G., & Frenk, C.S., 1992, Mon. Not. Roy. Astron. Soc., 262, 1023 CrossRef