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Просмотр по теме "Dark energy"

Просмотр по теме "Dark energy"

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  • Dark energy and dark matter unification via superfluid Chaplygin gas 
    Popov V. (2010)
    A new model describing the dark sector of the universe is established. The model involves Bose-Einstein condensate (BEC) as dark energy (DE) and an excited state above it as dark matter (DM). The condensate is assumed to ...
  • Dark matter as a result of field oscillations in the modified theory of induced gravity 
    Zaripov F. (2020)
    © 2019 by the author. The paper studies the modified theory of induced gravity (MTIG). The solutions of the MTIG equations contain two branches (stages): Einstein (ES) and "restructuring" (RS). Previously, solutions were ...
  • Electrodynamics of a Cosmic Dark Fluid 
    Balakin A. (2016)
    © 2016 by the authors.Cosmic Dark Fluid is considered as a non-stationary medium, in which electromagnetic waves propagate, and magneto-electric field structures emerge and evolve. A medium-type representation of the Dark ...
  • Interacting dark sector and the coincidence problem within the scope of LRS Bianchi type I model 
    Неизвестный автор (2018)
    © 2018, Springer Science+Business Media B.V., part of Springer Nature. It is shown that a suitable interaction between dark energy and dark matter in locally rotationally symmetric (LRS) Bianchi-I space-time can solve the ...
  • Modeling and testing the equation of state for (Early) dark energy 
    Nojiri S.; Odintsov S.D.; Sáez-Chillón Gómez D.; Sharov G.S. (2021)
    A general equation of state is considered for analyzing the possible behaviors for (Early) dark energy that alleviates the Hubble parameter tension problem. By departing from the possible evolution for the (Early) dark ...
  • Modified equations in the theory of induced gravity. Solution to the cosmological constant problem 
    Zaripov F. (2014)
    This research is an extension of the author's works, in which conformally invariant generalization of string theory was suggested to higher-dimensional objects. Special cases of the proposed theory are Einstein's theory ...
  • Planck 2015 results: XIV. Dark energy and modified gravity 
    Ade P.; Aghanim N.; Arnaud M.; Ashdown M.; Aumont J.; Baccigalupi C.; Banday A.; Barreiro R.; Bartolo N.; Battaner E.; Battye R.; Benabed K.; Benoît A.; Benoit-Lévy A.; Bernard J.; Bersanelli M.; Bielewicz P.; Bock J.; Bonaldi A.; Bonavera L.; Bond J.; Borrill J.; Bouchet F.; Bucher M.; Burigana C.; Butler R.; Calabrese E.; Cardoso J.; Catalano A.; Challinor A.; Chamballu A.; Chiang H.; Christensen P.; Church S.; Clements D.; Colombi S.; Colombo L.; Combet C.; Couchot F.; Coulais A.; Crill B.; Curto A.; Cuttaia F.; Danese L.; Davies R.; Davis R.; De Bernardis P.; De Rosa A.; De Zotti G.; Delabrouille J.; Désert F.; Diego J.; Dole H.; Donzelli S.; Doré O.; Douspis M.; Ducout A.; Dupac X.; Efstathiou G.; Elsner F.; Enßlin T.; Eriksen H.; Fergusson J.; Finelli F. (2016)
    © ESO, 2016.We study the implications of Planck data for models of dark energy (DE) and modified gravity (MG) beyond the standard cosmological constant scenario. We start with cases where the DE only directly affects the ...
  • Planck 2015 results: XXI. The integrated Sachs-Wolfe effect 
    Ade P.; Aghanim N.; Arnaud M.; Ashdown M.; Aumont J.; Baccigalupi C.; Banday A.; Barreiro R.; Bartolo N.; Basak S.; Battaner E.; Benabed K.; Benoît A.; Benoit-Lévy A.; Bernard J.; Bersanelli M.; Bielewicz P.; Bock J.; Bonaldi A.; Bonavera L.; Bond J.; Borrill J.; Bouchet F.; Bucher M.; Burigana C.; Butler R.; Calabrese E.; Cardoso J.; Casaponsa B.; Catalano A.; Challinor A.; Chamballu A.; Chiang H.; Christensen P.; Church S.; Clements D.; Colombi S.; Colombo L.; Combet C.; Couchot F.; Coulais A.; Crill B.; Curto A.; Cuttaia F.; Danese L.; Davies R.; Davis R.; De Bernardis P.; De Rosa A.; De Zotti G.; Delabrouille J.; Désert F.; Diego J.; Dole H.; Donzelli S.; Doré O.; Douspis M.; Ducout A.; Dupac X.; Efstathiou G.; Elsner F.; Enßlin T.; Eriksen H.; Fergusson J. (2016)
    © 2016 ESO.This paper presents a study of the integrated Sachs-Wolfe (ISW) effect from the Planck 2015 temperature and polarization data release. This secondary cosmic microwave background (CMB) anisotropy caused by the ...
  • Scalar field dark energy with a minimal coupling in a spherically symmetric background 
    Неизвестный автор (2018)
    © 2018 World Scientific Publishing Company. Dark energy models and modified gravity theories have been actively studied and the behaviors in the solar system have been also carefully investigated in a part of the models. ...
  • The ambiguity in the definition and behavior of the gravitational and cosmological 'coupling constants' in the theory of induced gravity 
    Zaripov F. (2019)
    © 2019 by the author. This work is the extension of author's research, where the modified theory of induced gravity (MTIG) is proposed. The theory describes two systems (stages): Einstein (ES) and "restructuring" (RS). We ...
  • The anisotropic distribution of the dark energy within the scope of LRS Bianchi type I model 
    Неизвестный автор (2018)
    © 2018, Springer Science+Business Media B.V., part of Springer Nature. We investigate the anisotropic locally rotationally symmetric (LRS) Bianchi type I cosmological model with dark matter and anisotropic dark energy. We ...
  • The change of the Universe epochs within the scope of Bianchi type-V model 
    Muharlyamov R.; Pankratyeva T. (2019)
    © 2019, Indian Association for the Cultivation of Science. We investigate the Bianchi type-V cosmological model with dark matter and anisotropic dark energy. It is assumed that the two sources minimally interact, so their ...
  • The late cosmic acceleration and the coincidence problem in Bianchi type i Universe 
    Muharlyamov R.; Pankratyeva T. (2019)
    © 2019 World Scientific Publishing Company. In locally rotationally symmetric (LRS) Bianchi-I spacetime, we are considering a special kind of a scale factor, called the hybrid expansion law (HEL). The HEL provides a ...
  • Viscous cosmology for early-And late-Time universe 
    Brevik I.; Grøn Ø.; De Haro J.; Odintsov S.; Saridakis E. (2017)
    © World Scientific Publishing Company. From a hydrodynamicist's point of view the inclusion of viscosity concepts in the macroscopic theory of the cosmic fluid would appear most natural, as an ideal fluid is after all an ...
  • Whether an enormously large energy density of the quantum vacuum is catastrophic 
    Mostepanenko V.; Klimchitskaya G. (2019)
    © 2019 by the authors. The problem of an enormously large energy density of the quantum vacuum is discussed in connection with the concept of renormalization of physical parameters in quantum field theory. Using the method ...

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