Browsing by Subject "inflation"

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  • A new look at the Schrödinger equation in exact scalar field cosmology 
    Unknown author (2018)
    © 2019 World Scientific Publishing Company. We propose a new representation of the Schrödinger-like equation for scalar field Friedmann cosmology where the scalar field is the argument, and the Hubble parameter is the ...
  • Arrow of time in dissipationless cosmology 
    Sahni V.; Shtanov Y.; Toporensky A. (2015)
    © 2015 IOP Publishing Ltd. It is generally believed that a cosmological arrow of time must be associated with entropy production. Indeed, in his seminal work on cyclic cosmology, Tolman introduced a viscous fluid in order ...
  • 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 ...
  • 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. ...
  • 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 ...
  • General dynamical properties of cosmological models with nonminimal kinetic coupling 
    Unknown author (2018)
    © 2018 IOP Publishing Ltd and Sissa Medialab. We consider cosmological dynamics in the theory of gravity with the scalar field possessing the nonminimal kinetic coupling to curvature given as η Gμνφ,μφ,ν, where η is an ...
  • Inflation is a source of unemployment 
    Кеба К.А.Н.К.; Сунгатуллина Д.Д. (2019)
    Every person treats the word "inflation" in his own way. Nevertheless, majority of humankind concur with the opinion that inflation is the situation when the price of the product and service rise. Among others, salary is ...
  • Inflation story: Slow-roll and beyond 
    Hazra D.K.; Paoletti D.; Debono I.; Shafieloo A.; Smoot G.F.; Starobinsky A.A. (2021)
    We present constraints on inflationary dynamics and features in the primordial power spectrum of scalar perturbations using the Cosmic Microwave Background temperature, polarization data from Planck 2018 data release and ...
  • Inflationary limits on the size of compact extra space 
    Nikulin V.; Rubin S. (2019)
    © 2019 World Scientific Publishing Company. We study restrictions imposed on the parameters of the Kaluza-Klein extra space supplied by the standard inflationary models. It is shown that the size of the extra space cannot ...
  • Macroeconomics 
    Abdullin Ildar Ikramovich; Ignateva Oksana Anatolevna; Mustafin Askar Nailevich; Gonos Jaroslav (2022)
    The textbook "Macroeconomics" is recommended for undergraduate and graduate students of all fields of study of Kazan (Volga region) Federal University, as well as for the use in the educational process by students of various ...
  • Multidimensional gravity with higher derivatives and inflation 
    Fabris Júlio C.; Popov Arkadiy Aleksandrovich; Rubin Sergey Georgievich (2020)
    We elaborate on the inflationary model starting from multidimensional Lagrangian and gravity with second-order curvature terms. The effective scalar field is related to the Ricci scalar of extra dimensions. It is shown ...
  • On Mass Spectra of Primordial Black Holes 
    Kirillov A.A.; Rubin S.G. (2021)
    Evidence for the primordial black holes (PBH) presence in the early Universe renews permanently. New limits on their mass spectrum challenge existing models of PBH formation. One of the known models is based on the closed ...
  • Probing features in inflaton potential and reionization history with future CMB space observations 
    Unknown author (2018)
    © 2018 IOP Publishing Ltd and Sissa Medialab. We consider the prospects of probing features in the primordial power spectrum with future Cosmic Microwave Background (CMB) polarization measurements. In the scope of the ...
  • Wiggly whipped inflation 
    Hazra D.; Shafieloo A.; Smoot G.; Starobinsky A. (2014)
    Motivated by BICEP2 results on the CMB polarization B-mode which imply primordial gravitational waves are produced when the Universe has the expansion rate of about H 1014 GeV, and by deviations from a smooth power-law ...

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