Results 11 to 20 of about 1,722,078 (332)
Physical Review D, 2004 We explore the physics of a gas of particles interacting with a condensate that spontaneously breaks Lorentz invariance. The equation of state of this gas varies from 1/3 to less than -1 and can lead to the observed cosmic acceleration. The particles are
Boss, A. P. +6 more
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Conformal Gravity: Dark Matter and Dark Energy
Entropy, 2013 This short review examines recent progress in understanding dark matter, dark energy, and galactic halos using theory that departs minimally from standard particle physics and cosmology.
Robert K. Nesbet
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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
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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
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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 +9 more
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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 +3 more
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Constrains on the electric charges of the binary black holes with GWTC-1 events
European Physical Journal C: Particles and Fields, 2021 Testing black hole’s charged property is a fascinating topic in modified gravity and black hole astrophysics. In the first Gravitational-Wave Transient Catalog (GWTC-1), ten binary black hole merger events have been formally reported, and these ...
Hai-Tang Wang +5 more
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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 +4 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
James Burnett, Christian G. Böhmer
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Characterizing the Sample Selection for Supernova Cosmology
The Open Journal of Astrophysics, 2021 Type Ia supernovae (SNe Ia) are used as distance indicators to infer the cosmological parameters that specify the expansion history of the universe. Parameter inference depends on the criteria by which the analysis SN sample is selected.
Alex G. Kim +1 more
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