International Conference
Dark Energy
and the Local Hubble Expansion Problem

September 21–24, 2022
Institute of Mathematics, Czech Academy of Sciences,
Zitna 25, Prague, Czech Republic

Aims and scope:
One hundred years ago, Russian mathematician and physicist Alexander A. Friedmann applied the system of Einstein equations to the hypersphere with a time varying radius. In this way, he obtained a nonlinear ordinary differential equation which is called the Friedmann equation after him and serves now as a cornerstone of the standard cosmological model. Unfortunately, it is well known that this model exhibits a number of paradoxes. Thus, the main goal of the CSS 2022 conference is to discuss whether and how the Friedmann equation can be applied at the various spatial scales, from our local cosmic neighborhood up to the whole Universe; and if the existence of dark matter and dark energy are merely artifacts of the excessive extrapolations. So, it is timely to gather specialists from various branches of astronomy and astrophysics to discuss these issues.

Conference topics:
  • Mathematical aspects of the extrapolations used in cosmology
  • Arguments for and against dark energy, and revisiting the foundations of physics
  • Alternative models for dark matter and dark energy
  • A systematic discord in the value of the Hubble constant derived by different methods
  • Theoretical possibility and observational evidence for small-scale cosmological effects
  • Quantum effects on the early Universe and their observational imprints at the present time

  • Conference photo:
    Conference photo

    Conference announcements:
    Download PDF
    Download PDF

    Conference program:
    Download PDF

    ZOOM presentations:
    Y. Dumin: Lambda-instability of Keplerian orbits and the problem of hypervelocity stars
    A. Starobinsky: Inflationary models with large peaks in primordial perturbation spectra at small scales
    K. Bronnikov: Wormholes in a Friedmann universe

    List of participants:
    Download PDF

    Conference venue:
    Institute of Mathematics, Czech Academy of Sciences, Zitna 25, Prague 1
    Google Information for visitors]

    A book of proceedings will be published by the Institute of Mathematics before the conference, both in printed (black and white) and electronic (color) form.
    Use the following files to prepare your contribution (max. 20 pages) in LaTeX2e:
  • css2022.cls - style file
  • sample_css2022.tex - sample contribution (edit this file to create your manuscript)
  • figure.eps - figure for the sample contribution (latex)
  • sample_css2022.pdf - the final output of the sample contribution

  • Proceedings 2022 to download:
    PDF of the complete book.

    Proceedings 2020 to download:
    PDF of the complete book.

    Proceedings 2018 to download:
    PDF of the complete book.

    Proceedings 2016 to download:
    PDF of the complete book.

    The conference is free of charge for all accepted participants. In order to register, please, send the enclosed REGISTRATION FORM containing your name, titles, and affiliation to the address below by April 30, 2022. If you wish to present a talk, include its tentative title. Early registration is strongly recommended.

    Participants are supposed to organize their own accommodation. There is a variety of possibilities in the vicinity of the venue. We have positive experience with Residence V Tunich. However, there are many other options within a 5 minute walk: Hotel Andante, Hotel Amarilis, Hotel First Republic Prague, etc.

  • April 30, 2022 - registration
  • April 30, 2022 - submissions for proceedings
  • June 30, 2022 - acceptance of contributions to proceedings

  • Scientific committee:
    Assoc. Prof. Yurii Dumin (Moscow State University & Space Research Institute of RAS, Russia)
    Prof. Itzhak Goldman (Afeka College, Israel)
    Prof. Igor Karachentsev (Special Astrophysical Observatory of RAS, N. Arkhyz, Russia)
    Prof. Sergei Kopeikin (University of Missouri, USA)
    Prof. Pavel Kroupa (University of Bonn, Germany & Charles University, Czech Republic)
    Prof. Andre Maeder (Geneva Observatory, Switzerland)
    Assoc. Prof. Attila Meszaros (Charles University, Czech Republic)
    Prof. Marek Nowakowski (Univ. de los Andes, Colombia)
    Dr. Dmitry Pavlov (Research Institute of Hypercomplex Systems, Russia)
    Prof. Lawrence Somer (Catholic University of America, USA)
    Prof. Alessandro Spallicci (University of Orleans, CNRS, France)
    Prof. Alexei Starobinsky (Landau Institute of RAS, Russia)

    Local organizing committee:
    Prof. Michal Krizek (Chair)
    Assoc. Prof. Yurii Dumin (Vice-Chair)
    Prof. Pavel Kroupa
    Assoc. Prof. Tomas Vejchodsky
    Hana Bilkova

    Contact address:
    Prof. RNDr. Michal Krizek, DrSc.
    Institute of Mathematics, Czech Academy of Sciences
    Zitna 25
    115 67 Prague 1
    Czech Republic
    Phone: +420 222 090 712

    Coorganized with
    Astronomical Institute of Charles University,
    Faculty of Mathematics and Physics

    Our media partner:

    Last update: August 15, 2022