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 language | English |
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Article number | 1847014 |
Journal | International Journal of Modern Physics D |
Volume | 27 |
Issue number | 14 |
DOIs | |
Publication status | Published - 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