Results 11 to 20 of about 468,012 (314)
Physics Letters B, 2017 We build a model of metastable dark energy, in which the observed vacuum energy is the value of the scalar potential at the false vacuum. The scalar potential is given by a sum of even self-interactions up to order six.
Ricardo G. Landim, Elcio Abdalla
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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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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.
Li, Miao +3 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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Dark energy and dark matter [PDF]
Physics Letters B, 2003 4 pages latex, 2 ...
COMELLI, DANIELE +2 more
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Physical Review D, 2020 We present a novel source of dark energy, which is motivated by the prevalence of hidden sectors in string theory models and is consistent with all of the proposed swampland conjectures. Thermal effects hold a light hidden sector scalar at a point in field space that is not a minimum of its zero temperature potential.
Edward Hardy, Susha Parameswaran
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The Astronomical Journal, 2023 We present a study of the potential for convolutional neural networks (CNNs) to enable separation of astrophysical transients from image artifacts, a task known as “real–bogus” classification, without requiring a template-subtracted (or difference) image,
Tatiana Acero-Cuellar +5 more
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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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On dark matter and dark energy
Литьë и металлургия, 2020 The dark matter hypothesis was created to explain the reason for the preservation of stellar clusters from dispersion. The weak point of this hypothesis is the great age of space, which is 13.8 billion years.
V. Yu. Stetsenko, A. V. Stetsenko
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