Results 11 to 20 of about 500,277 (262)

Dark sector unifications: Dark matter-phantom energy, dark matter - constant w dark energy, dark matter-dark energy-dark matter

Physics Letters B, 2019
The paper brings a novel approach to unification of dark matter and dark energy in terms of a cosmic fluid. A model is introduced in which the cosmic fluid speed of sound squared is defined as a function of its equation of state (EoS) parameter.
Dalibor Perković, Hrvoje Štefančić
doaj   +3 more sources

Holographic Dark Information Energy: Predicted Dark Energy Measurement [PDF]

Entropy, 2013
Several models have been proposed to explain the dark energy that is causing universe expansion to accelerate. Here the acceleration predicted by the Holographic Dark Information Energy (HDIE) model is compared to the acceleration that would be produced ...
Michael Paul Gough
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Dark energy and dark matter [PDF]

Physics Letters B, 2003
4 pages latex, 2 ...
COMELLI, DANIELE, Pietroni, M., Riotto, A.   +2 more
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DARK ENERGY WITH DARK SPINORS [PDF]

Modern Physics Letters A, 2010
Ever since the first observations that we are living in an accelerating universe, it has been asked what dark energy is. There are various explanations, all of which have various drawbacks or inconsistencies. Here we show that using a dark spinor field it is possible to have an equation of state that crosses the phantom divide, becoming a dark phantom
Boehmer, Christian G., Burnett, James
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ON ANISOTROPIC DARK ENERGY [PDF]

Modern Physics Letters A, 2009
Since the discovery of accelerated expansion of the universe, it was necessary to introduce a new component of matter distribution called dark energy. The standard cosmological model considers isotropy of the pressure and assumes an equation of state p = ωρ, relating the pressure p and the energy density ρ.
Chan, R., Da Silva, M. F. A., Da Rocha, Jaime F. Villas   +2 more
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DARK ENERGY, WITH SIGNATURES [PDF]

International Journal of Modern Physics D, 2010
We propose a class of simple dark energy models which predict a late-time dark radiation component and a distinctive time-dependent equation of state w(z) for redshift z < 3. The dark energy field can be coupled strongly enough to standard model particles to be detected in colliders, and the model requires only modest additional particle content ...
Dutta, Sourish, Scherrer, Robert J., Hsu, Stephen D. H.   +2 more
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THE DARK ENERGY CAMERA [PDF]

The Astronomical Journal, 2015
submitted to AJ Corresponding Authors H. T. Diehl (diehl@fnal.gov)
Flaugher, B., Diehl, H. T., Honscheid, K., Abbott, T. M. C., Alvarez, O., Angstadt, R., Annis, J. T., Antonik, M., Ballester, O., Beaufore, L., Bernstein, G. M., Bernstein, R. A., Bigelow, B., Bonati, M., Boprie, D., Brooks, D., Buckley-Geer, E. J., Campa, J., Cardiel-Sas, L., Castander, F. J., Castilla, J., Cease, H., Cela-Ruiz, J. M., Chappa, S., Chi, E., Cooper, C., Costa, L. N. da, Dede, E., Derylo, G., DePoy, D. L., Vicente, J. de, Doel, P., Drlica-Wagner, A., Eiting, J., Elliott, A. E., Emes, J., Estrada, J., Neto, A. Fausti, Finley, D. A., Flores, R., Frieman, J., Gerdes, D., Gladders, M. D., Gregory, B., Gutierrez, G. R., Hao, J., Holland, S. E., Holm, S., Huffman, D., Jackson, C., James, D. J., Jonas, M., Karcher, A., Karliner, I., Kent, S., Kessler, R., Kozlovsky, M., Kron, R. G., Kubik, D., Kuehn, K., Kuhlmann, S., Kuk, K., Lahav, O., Lathrop, A., Lee, J., Levi, M. E., Lewis, P., Li, T. S., Mandrichenko, I., Marshall, J. L., Martinez, Gustavo, Merritt, K. W., Miquel, R., Munoz, F., Neilsen, E. H., Nichol, R. C., Nord, B., Ogando, R., Olsen, J., Palio, N., Patton, K., Peoples, J., Plazas, A. A., Rauch, J., Reil, K., Rheault, J. -P., Roe, N. A., Rogers, H., Roodman, A., Sanchez, E., Scarpine, V., Schindler, R. H., Schmidt, R., Schmitt, R., Schubnell, M., Schultz, K., Schurter, P., Scott, L., Serrano, S., Shaw, T. M., Smith, R. C., Soares-Santos, M., Stefanik, A., Stuermer, W., Suchyta, E., Sypniewski, A., Tarle, G., Thaler, J., Tighe, R., Tran, C., Tucker, D., Walker, A. R., Wang, G., Watson, M., Weaverdyck, C., Wester, W., Woods, R., Yanny, B., The DES Collaboration   +118 more
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Hot new early dark energy: Towards a unified dark sector of neutrinos, dark energy and dark matter

Physics Letters B, 2022
Hot new early dark energy describes a supercooled, first-order phase transition that takes place at sub-eV temperatures in the dark sector. It lowers the sound horizon, which provides a possible solution to the Hubble tension, and, at the same time, it ...
Florian Niedermann, Martin S. Sloth
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Dark Energy [PDF]

Journal of Physics: Conference Series, 2011
Dark energy models account for the present accelerated expansion of the universe. Many models were suggested and investigated, based on very different physical principles. We will review some representative models emphasizing similarities and differences between these various approaches.
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DARK ENERGY WITHOUT DARK ENERGY [PDF]

Dark Matter in Astroparticle and Particle Physics, 2008
32 pages, 8 figures; Invited contribution to appear in the Proceedings of the Dark2007 Conference, Sydney, Australia, Sept 2007, eds H. Klapdor-Kleingrothaus and G.F. Lewis, (World Scientific, Singapore, 2008)
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