Results 21 to 30 of about 6,544,802 (296)

Combining outlier analysis algorithms to identify new physics at the LHC

Journal of High Energy Physics, 2021
The lack of evidence for new physics at the Large Hadron Collider so far has prompted the development of model-independent search techniques. In this study, we compare the anomaly scores of a variety of anomaly detection techniques: an isolation forest ...
Melissa van Beekveld, Sascha Caron, Luc Hendriks, Paul Jackson, Adam Leinweber, Sydney Otten, Riley Patrick, Roberto Ruiz de Austri, Marco Santoni, Martin White   +9 more
doaj   +1 more source

Dark energy and dark matter [PDF]

Physics Letters B, 2003
4 pages latex, 2 ...
COMELLI, DANIELE, Pietroni, M., Riotto, A.   +2 more
openaire   +4 more sources

Using Host Galaxy Photometric Redshifts to Improve Cosmological Constraints with Type Ia Supernovae in the LSST Era

The Astrophysical Journal, 2023
We perform a rigorous cosmology analysis on simulated Type Ia supernovae (SNe Ia) and evaluate the improvement from including photometric host galaxy redshifts compared to using only the “ z _spec ” subset with spectroscopic redshifts from the host or SN.
Ayan Mitra, Richard Kessler, Surhud More, Renee Hlozek, The LSST Dark Energy Science Collaboration   +4 more
doaj   +1 more source

Testing dark energy after pre-recombination early dark energy

Physics Letters B, 2022
In the studies on pre-recombination early dark energy (EDE), the evolution of Universe after recombination is usually regarded as ΛCDM-like, which corresponds that the equation of state of dark energy responsible for current accelerated expansion is w=−1.
Hao Wang, Yun-Song Piao
doaj   +1 more source

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
openaire   +2 more sources

Metadetection Weak Lensing for the Vera C. Rubin Observatory

The Open Journal of Astrophysics, 2023
Forthcoming astronomical imaging surveys will use weak gravitational lensing shear as a primary probe to study dark energy, with accuracy requirements at the 0.1% level.
Erin S. Sheldon, Matthew R. Becker, Michael Jarvis, Robert Armstrong, LSST Dark Energy Science Collaboration   +4 more
doaj   +1 more source

290 metagenome-assembled genomes from the Mediterranean Sea: a resource for marine microbiology [PDF]

PeerJ, 2017
The Tara Oceans Expedition has provided large, publicly-accessible microbial metagenomic datasets from a circumnavigation of the globe. Utilizing several size fractions from the samples originating in the Mediterranean Sea, we have used current assembly ...
Benjamin J. Tully, Rohan Sachdeva, Elaina D. Graham, John F. Heidelberg   +3 more
doaj   +2 more sources

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
openaire   +3 more sources

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
openaire   +2 more sources

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
openaire   +4 more sources