Results 71 to 80 of about 1,833,333 (166)

DARK ENERGY, DARK MATTER AND GRAVITY [PDF]

International Journal of Modern Physics D, 2007
We discuss the motivation for high accuracy relativistic gravitational experiments in the solar system and complementary cosmological tests. We focus our attention on the issue of distinguishing a generic scalar theory of gravity as the underlying physical theory from the usual general-relativistic picture, where one expects the presence of ...
openaire   +2 more sources

From Dark Energy & Dark Matter to Dark Metric [PDF]

Foundations of Physics, 2009
It is nowadays clear that General Relativity cannot be the definitive theory of Gravitation due to several shortcomings that come out both from theoretical and experimental viewpoints. At large scales (astrophysical and cosmological) the attempts to match it with the latest observational data lead to invoke Dark Energy and Dark Matter as the bulk ...
CAPOZZIELLO, SALVATORE, M. De Laurentis, M. Francaviglia, S. Mercadante   +3 more
openaire   +4 more sources

Demonstration of scissor-cross ionization injection in laser wakefield accelerators

Communications Physics
Laser wakefield acceleration (LWFA) holds great potential in the exploration of the next-generation accelerators and future colliders, in which the injection mechanism plays a crucial role as it directly affects the characteristics of electron ...
Siyu Chen, Guangwei Lu, Xichen Hu, Mingyang Zhu, Minghao Ma, Ming Zeng, Hao Xu, Jia Wang, Mingxuan Wei, Jiao Jia, Zhida Yang, Hanmi Mou, Zhuofan Zhang, Runze Li, Feng liu, Boyuan Li, Min chen, Dazhang Li, Wenchao Yan   +18 more
doaj   +1 more source

The Dark Energy Survey: more than dark energy – an overview [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
32 pages, 15 figures; a revised Figure 1 and minor changes, to match the published MNRAS ...
Dark Energy Survey Collaboration, Abbott, T., Abdalla, F. B., Aleksic, J., Allam, S., Amara, A., Bacon, D., Balbinot, E., Banerji, M., Bechtol, K., Benoit-Levy, A., Bernstein, G. M., Bertin, E., Blazek, J., Bonnett, C., Bridle, S., Brooks, D., Brunner, R. J., Buckley-Geer, E., Burke, D. L., Caminha, G. B., Capozzi, D., Carlsen, J., Carnero-Rosell, A., Carollo, M., Carrasco-Kind, M., Carretero, J., Castander, F. J., Clerkin, L., Collett, T., Conselice, C., Crocce, M., Cunha, C. E., D'Andrea, C. B., da Costa, L. N., Davis, T. M., Desai, S., Diehl, H. T., Dietrich, J. P., Dodelson, S., Doel, P., Drlica-Wagner, A., Estrada, J., Etherington, J., Evrard, A. E., Fabbri, J., Finley, D. A., Flaugher, B., Foley, R. J., Rosalba, P., Frieman, J., Garcia-Bellido, J., Gaztanaga, E., Gerdes, D. W., Giannantonio, T., Goldstein, D. A., Gruen, D., Gruendl, R. A., Guarnieri, P., Gutierrez, G., Hartley, W., Honscheid, K., Jain, B., James, D. J., Jeltema, T., Jouvel, S., Kessler, R., King, A., Kirk, D., Kron, R., Kuehn, K., Kuropatkin, N., Lahav, O., Li, T. S., Lima, M., Lin, H., Maia, M. A. G., Makler, M., Manera, M., Maraston, C., Marshall, J. L., Martini, P., McMahon, R. G., Melchior, P., Merson, A., Miller, C. J., Miquel, R., Mohr, J. J., Morice-Atkinson, X., Naidoo, K., Neilsen, E., Nichol, R. C., Nord, B., Ogando, R., Ostrovski, F., Palmese, A., Papadopoulos, A., Peiris, H., Peoples, J., Percival, W. J., Plazas, A. A., Reed, S. L., Refregier, A., Romer, A. K., Roodman, A., Ross, A., Rozo, E., Rykoff, E. S., Sadeh, I., Sako, M., Sanchez, C., Sanchez, E., Santiago, B., Scarpine, V., Schubnell, M., Sevilla-Noarbe, I., Sheldon, E., Smith, M., Smith, R. C., Soares-Santos, M., Sobreira, F., Soumagnac, M., Suchyta, E., Sullivan, M., Swanson, M., Tarle, G., Thaler, J., Thomas, D., Thomas, R. C., Tucker, D., Vieira, J. D., Vikram, V., Walker, A. R., Wechsler, R. H., Weller, J., Wester, W., Whiteway, L., Wilcox, H., Yanny, B., Zhang, Y., Zuntz, J.   +140 more
openaire   +9 more sources

Astrometric Redshifts of Supernovae

The Astrophysical Journal
Differential Chromatic Refraction (DCR) is caused by the wavelength dependence of our atmosphere’s refractive index, which shifts the apparent positions of stars and galaxies and distorts their shapes depending on their spectral energy distributions ...
Jaemyoung (Jason) Lee, Masao Sako, Richard Kessler, Alex I. Malz, The LSST Dark Energy Science Collaboration   +4 more
doaj   +1 more source

Changes in Microbial Energy Metabolism Measured by Nanocalorimetry during Growth Phase Transitions

Frontiers in Microbiology, 2018
Calorimetric measurements of the change in heat due to microbial metabolic activity convey information about the kinetics, as well as the thermodynamics, of all chemical reactions taking place in a cell.
Alberto Robador, Alberto Robador, Alberto Robador, Douglas E. LaRowe, Douglas E. LaRowe, Steven E. Finkel, Steven E. Finkel, Jan P. Amend, Jan P. Amend, Jan P. Amend, Kenneth H. Nealson, Kenneth H. Nealson   +11 more
doaj   +1 more source

Interacting quintessence and the coincidence problem

, 2004
We investigate the role of a possible coupling of dark matter and dark energy. In particular, we explore the consequences of such an interaction for the coincidence problem, i.e., for the question, why the energy densities of dark matter and dark energy ...
Chimento, L. P., Jakubi, A. S., Pavon, D., Zimdahl, W.   +3 more
core   +1 more source

Bouncing Cosmologies with Dark Matter and Dark Energy

Universe, 2016
We review matter bounce scenarios where the matter content is dark matter and dark energy. These cosmologies predict a nearly scale-invariant power spectrum with a slightly red tilt for scalar perturbations and a small tensor-to-scalar ratio. Importantly,
Yi-Fu Cai, Antonino Marcianò, Dong-Gang Wang, Edward Wilson-Ewing   +3 more
doaj   +1 more source

Optimisation of the vertex detector and measurement of Higgs decays to second-generation quarks at the CEPC

Journal of High Energy Physics
The vertex detector is crucial for precision measurements of the Higgs boson at the electron-positron Higgs factory. Benchmarked with H → c c ¯ $$ H\to c\overline{c} $$ and H → s s ¯ $$ H\to s\overline{s} $$ measurements in the ν ν ¯ H $$ \nu \overline ...
Jialin Li, Hao Liang, Kaili Zhang, Yifan Zhu, Jun Guo, Haijun Yang, Manqi Ruan   +6 more
doaj   +1 more source

Testing the Interacting Dark Energy Model with Cosmic Microwave Background Anisotropy and Observational Hubble Data

Entropy, 2017
The coupling between dark energy and dark matter provides a possible approach to mitigate the coincidence problem of the cosmological standard model. In this paper, we assumed the interacting term was related to the Hubble parameter, energy density of ...
Weiqiang Yang, Lixin Xu, Hang Li, Yabo Wu, Jianbo Lu   +4 more
doaj   +1 more source