Conformal symmetry and the cosmological constant problem

Stefano Lucat, Tomislav Prokopec, Bogumila Swieżewska

Research output: Contribution to journalReview articlepeer-review

Abstract

We argue that when a theory of gravity and matter is endowed with (classical) conformal symmetry, the fine tuning required to obtain the cosmological constant at its observed value can be significantly reduced. Once tuned, the cosmological constant is stable under a change of the scale at which it is measured.

Original languageEnglish
Article number1847014
JournalInternational Journal of Modern Physics D
Volume27
Issue number14
DOIs
Publication statusPublished - 1 Oct 2018

Funding

The authors acknowledge the support from the D-ITP consortium, a program of the NWO that is funded by the Dutch Ministry of Education, Culture and Science (OCW). This work is part of the research programme of the Foundation for Fundamental Research on Matter (FOM), which is part of the Netherlands Organisation for Scientific Research (NWO). S.L. acknowledges financial support from an NWO-Graduate Program grant. B.S´. acknowledges support from the National Science Centre, Poland, the HARMONIA project under contract UMO-2015/18/M/ST2/00518 (2016–2019).

Keywords

  • conformal symmetry
  • Cosmological constant
  • naturalness

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