Results 1 to 10 of about 685,467 (148)

Investigating dark energy experiments with principal components [PDF]

Journal of Cosmology and Astroparticle Physics, 2009
We use a principal component approach to contrast different kinds of probes of dark energy, and to emphasize how an array of probes can work together to constrain an arbitrary equation of state history w(z). We pay particular attention to the role of the
, , , A.J. Albrecht ., B.A. Bassett, B.A. Bassett, Gong-Bo Zhao, HST collaboration, J. Tang, L. Knox, Levon Pogosian, M. Tegmark ., R. Caldwell, R. de Putter, Robert G Crittenden, SDSS collaboration, Supernova Cosmology Project collaboration, Supernova Cosmology Project collaboration, Supernova Search Team collaboration, T.D. Kitching, WMAP collaboration, WMAP collaboration, Z. Ivezic .   +22 more
core   +6 more sources

Designing dark energy afterglow experiments

Physical Review D, 2012
Chameleon fields, which are scalar field dark energy candidates, can evade fifth force constraints by becoming massive in high-density regions. However, this property allows chameleon particles to be trapped inside a vacuum chamber with dense walls ...
Chou, Aaron S., Steffen, Jason H., Upadhye, Amol   +2 more
core   +3 more sources

Symmetron dark energy in laboratory experiments

Physical Review Letters, 2013
The symmetron scalar field is a matter-coupled dark energy candidate which effectively decouples from matter in high-density regions through a symmetry restoration.
Upadhye, Amol
core   +4 more sources

Information Dark Energy Can Resolve the Hubble Tension and Is Falsifiable by Experiment

Entropy, 2022
We consider the role information energy can play as a source of dark energy. Firstly, we note that if stars and structure had not formed in the universe, elemental bits of information describing the attributes of particles would have exhibited properties
Michael Paul Gough
doaj   +3 more sources

Dark energy fifth forces in torsion pendulum experiments

Physical Review D, 2012
The chameleon scalar field is a matter-coupled dark energy candidate whose nonlinear self-interaction partially screens its fifth force at laboratory scales.
Amol Upadhye, E. Fischbach, S. Bassler
core   +3 more sources

Constraints to Dark Matter from Inert Higgs Doublet Model [PDF]

Advances in High Energy Physics, 2016
We study the Inert Higgs Doublet Model and its inert scalar Higgs H as the only source for dark matter. It is found that three mass regions of the inert scalar Higgs can give the correct dark matter relic density.
Marco Aurelio Díaz, Benjamin Koch, Sebastián Urrutia-Quiroga   +2 more
doaj   +4 more sources

Mirror dark matter will be confirmed or excluded by XENON1T

Physics Letters B, 2017
Mirror dark matter, where dark matter resides in a hidden sector exactly isomorphic to the standard model, can be probed via direct detection experiments by both nuclear and electron recoils if the kinetic mixing interaction exists.
J.D. Clarke, R. Foot
doaj   +4 more sources

The dark matter and dark energy [PDF]

SHS Web of Conferences, 2023
The dark matter and dark energy are one of the biggest challenges facing contemporary physics and astronomy. Dark energy and dark matter play an important role the universe.
Wu Yumiao
doaj   +1 more source

Using Dark Energy Explorers and Machine Learning to Enhance the Hobby–Eberly Telescope Dark Energy Experiment

The Astrophysical Journal, 2023
Abstract We present analysis using a citizen science campaign to improve the cosmological measures from the Hobby–Eberly Telescope Dark Energy Experiment (HETDEX). The goal of HETDEX is to measure the Hubble expansion rate, H(z), and angular diameter distance, D A(z), at z = 2.4, each to percent-level accuracy.
Lindsay R. House, Karl Gebhardt, Keely Finkelstein, Erin Mentuch Cooper, Dustin Davis, Robin Ciardullo, Daniel J Farrow, Steven L. Finkelstein, Caryl Gronwall, Donghui Jeong, L. Clifton Johnson, Chenxu Liu, Benjamin P. Thomas, Gregory Zeimann   +13 more
openaire   +5 more sources

Reducing zero-point systematics in dark energy supernova experiments [PDF]

Astroparticle Physics, 2011
We study the effect of filter zero-point uncertainties on future supernova dark energy missions. Fitting for calibration parameters using simultaneous analysis of all Type Ia supernova standard candles achieves a significant improvement over more traditional fit methods.
Faccioli, Lorenzo, Kim, Alex G, Miquel, Ramon, Bernstein, Gary, Bonissent, Alain, Brown, Matthew, Carithers, William, Christiansen, Jodi, Connolly, Natalia, Deustua, Susana, Gerdes, David, Gladney, Larry, Kushner, Gary, Linder, Eric, McKee, Shawn, Mostek, Nick, Shukla, Hemant, Stebbins, Albert, Stoughton, Chris, Tucker, David   +19 more
openaire   +5 more sources