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Просмотр Научные публикации в Scopus по автору "Odintsov S."

Просмотр Научные публикации в Scopus по автору "Odintsov S."

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  • Big bounce with finite-time singularity: The F (R) gravity description 
    Odintsov S.; Oikonomou V. (2017)
    © 2017 World Scientific Publishing Company. An alternative to the Big Bang cosmologies is obtained by the Big Bounce cosmologies. In this paper, we study a bounce cosmology with a Type IV singularity occurring at the ...
  • Constant-roll inflation in f(T) teleparallel gravity 
    Awad A.; El Hanafy W.; Nashed G.; Odintsov S.; Oikonomou V. (2018)
    © 2018 IOP Publishing Ltd and Sissa Medialab. We investigate in detail the implications of the constant-roll condition on the inflationary era of a scalar field coupled to a teleparallel f(T) gravity. The resulting ...
  • Correspondence of F(R) gravity singularities in Jordan and Einstein frames 
    Bahamonde S.; Odintsov S.; Oikonomou V.; Wright M. (2016)
    © 2016 Elsevier Inc.We study the finite time singularity correspondence between the Jordan and Einstein frames for various F(R) gravity theories. Particularly we investigate the ordinary pure F(R) gravity case and the ...
  • Cosmological attractor inflation from the RG-improved Higgs sector of finite gauge theory 
    Elizalde E.; Odintsov S.; Pozdeeva E.; Vernov S. (2016)
    © 2016 IOP Publishing Ltd and Sissa Medialab srl.The possibility to construct an inflationary scenario for renormalization-group improved potentials corresponding to the Higgs sector of finite gauge models is investigated. ...
  • Cosmological perturbations in a mimetic matter model 
    Matsumoto J.; Odintsov S.; Sushkov S. (2015)
    © 2015 American Physical Society. We investigate the cosmological evolution of a mimetic matter model with arbitrary scalar potential. The cosmological reconstruction - which is the method for constructing a model for an ...
  • Dark energy oscillations in mimetic F (R) gravity 
    Odintsov S.; Oikonomou V. (2016)
    © 2016 American Physical Society.In this paper we address the problem of dark energy oscillations in the context of mimetic F(R) gravity with potential. The issue of dark energy oscillations can be a problem in some models ...
  • Dark energy oscillations in mimetic F (R) gravity 
    Odintsov S.; Oikonomou V. (2016)
    © 2016 American Physical Society.In this paper we address the problem of dark energy oscillations in the context of mimetic F(R) gravity with potential. The issue of dark energy oscillations can be a problem in some models ...
  • Deceleration versus acceleration universe in different frames of F(R) gravity 
    Bahamonde S.; Odintsov S.; Oikonomou V.; Tretyakov P. (2017)
    © 2017 The AuthorsIn this paper we study the occurrence of accelerating universe versus decelerating universe between the F(R) gravity frame (Jordan frame) and non-minimally coupled scalar field theory frame, and the ...
  • Dynamical systems perspective of cosmological finite-time singularities in f (R) gravity and interacting multifluid cosmology 
    Odintsov S.; Oikonomou V. (2018)
    © 2018 American Physical Society. In this work we shall investigate the occurrence of future cosmological finite-time singularities in the dynamical system corresponding to two cosmological theories, namely that of vacuum ...
  • Effects of modified gravity on the turnaround radius in cosmology 
    Nojiri S.; Odintsov S.; Faraoni V. (2018)
    © 2018 American Physical Society. We revisit the concept of turnaround radius in cosmology, in the context of modified gravity. While preliminary analyses were limited to scalar-tensor/F(R) gravity, we extend the definition ...
  • Effects of spatial curvature on the f (R) gravity phase space: No inflationary attractor? 
    Odintsov S.; Oikonomou V. (2019)
    © 2019 IOP Publishing Ltd Printed in the UK. In this paper we study the effects of spatial curvature of the metric on the phase space of vacuum f (R) gravity. Particularly, we appropriately choose the variables of the ...
  • F (R) gravity inflation with string-corrected axion dark matter 
    Odintsov S.; Oikonomou V. (2019)
    © 2019 American Physical Society. It is quite well known that string-inspired axionic terms of the form ν(φ)R-R, known also as Chern-Simons terms, do not affect the scalar perturbations and the background evolution for a ...
  • Finite-time singularities in swampland-related dark-energy models 
    Odintsov S.; Oikonomou V. (2019)
    © 2019 Institute of Physics Publishing. All rights reserved. In this work we shall investigate the singularity structure of the phase space corresponding to an exponential quintessence dark-energy model recently related ...
  • Gauss–Bonnet gravitational baryogenesis 
    Odintsov S.; Oikonomou V. (2016)
    © 2016 The Author(s)In this letter we study some variant forms of gravitational baryogenesis by using higher order terms containing the partial derivative of the Gauss–Bonnet scalar coupled to the baryonic current. This ...
  • Inflationary cosmology in unimodular F (T) gravity 
    Bamba K.; Odintsov S.; Saridakis E. (2017)
    © 2017 World Scientific Publishing Company. We investigate the inflationary realization in the context of unimodular F(T) gravity, which is based on the F(T) modification of teleparallel gravity, in which one imposes the ...
  • Inflationary dynamics with a smooth slow-roll to constant-roll era transition 
    Odintsov S.; Oikonomou V. (2017)
    © 2017 IOP Publishing Ltd and Sissa Medialab srl .In this paper we investigate the implications of having a varying second slow-roll index on the canonical scalar field inflationary dynamics. We shall be interested in cases ...
  • Inflationary universe from higher-derivative quantum gravity 
    Myrzakulov R.; Odintsov S.; Sebastiani L. (2015)
    © 2015 American Physical Society. We consider higher-derivative quantum gravity where the renormalization-group-improved effective action beyond the one-loop approximation is derived. Using this effective action, the ...
  • Inflationary universe from perfect fluid and F (R) gravity and its comparison with observational data 
    Bamba K.; Nojiri S.; Odintsov S.; Sáez-Gómez D. (2014)
    © 2014 American Physical Society. We investigate the descriptions for the observables of inflationary models, in particular, the spectral index of curvature perturbations, the tensor-to-scalar ratio, and the running of the ...
  • Kinetic scalar curvature extended f(R) gravity 
    Chervon S.; Nikolaev A.; Mayorova T.; Odintsov S.; Oikonomou V. (2018)
    © 2018 The Authors In this work we study a modified version of vacuum f(R) gravity with a kinetic term which consists of the first derivatives of the Ricci scalar. We develop the general formalism of this kinetic Ricci ...
  • Newton law in covariant unimodular F(R) gravity 
    Nojiri S.; Odintsov S.; Oikonomou V. (2016)
    © 2016 World Scientific Publishing Company.We investigate the Newton law in the unimodular F(R) gravity. In the standard F(R) gravity, due to the extra scalar mode, there often appear the large corrections to the Newton ...

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