Cosmology and the Fate of Dilatation Symmetry

2017/11/08 by C. Wetterich · 3 citations
Physics and Astronomy · #hep-th #gr-qc

paper · pdf · doi:10.1016/0550-3213(88)90193-9

Original preprint from 1987, 15 pages

arxiv created 2017/11/08 · arxiv updated 2017/11/13

Abstract

We discuss the cosmological constant problem in the light of dilatation symmetry and its possible anomaly. For dilatation symmetric quantum theories realistic asymptotic cosmology is obtained provided the effective potential has a non-trivial minimum. For theories with dilatation anomaly one needs as a non-trivial "cosmon condition" that the energy-momentum tensor in the vacuum is purely anomalous. Such a condition is related to the short-distance renormalization group behavior of the fundamental theory. Observable deviations from the standard hot big bang cosmology are possible.

Cited by

• Observational Constraints and Cosmological Dynamics of Interacting Fractional Holographic Dark Energy in Light of DESI DR2
• Effective field theory of coupled dark energy and dark matter
• Constraints on Coupled Dark Energy in the DESI Era

Related

• Naturalness of exponential cosmon potentials and the cosmological constant problem
• Two-dimensional quantum dilaton gravity and the quantized cosmological constant
• The Cosmological Constant Problem, an Inspiration for New Physics
• Dilatations Revisited
• Cosmological Constant or Cosmological Potential